Stories and Patrol Logs + Screenshots and Videos (merged) - Page 352

Bubblehead1980 · 06-01-22, 05:14 AM

AIKOKU MARU Class Auxiliary Cruiser sinking. Fired four MK 18. Target was making 18 knots. One MK 18 torpedo hit the stern, knocking out the prop and starting a fire. The fire burned on and off over a hour while the vessel flooding by the stern and eventually sunk. I had TheDarkWraith's fire damage mod enabled, pretty cool.

AIKOKU MARU Class Auxiliary Cruiser 14280 tons

Bow of AIKOKU MARU Class Auxiliary Cruiser protruding.

1600 ton tankers burning after four MK 14 hits. Tanker was in center of convoy and as tankers are priority targets...fire four to ensure the kill.

Escorting DD of the Auxiliary Cruiser.

KANAGA MARU with two large holes sinking with crew in lifeboat.

Torpedo Attack No.7 (final torpedo attack of patrol) Sunk a 5100 ton tanker in night surface attack. Blew up nicely. Range from target is about 3300 yards. Tanker was in center column. Fired from outside about 2000 yards off starboard column.

Bubblehead1980 · 06-01-22, 05:18 AM

Torpedo Attack No7. Night surface attack. Fired from 2000 yards off starboard column at tanker in center. Took a lot of gunfire after torpedoes hit, but no hits, managed to get away with escorts pursuing.

Loaded tankers blow up nicely. With EAX sound enabled, really a neat experience.

Auxiliary Cruier's prop knocked off by MK 18 torpedo.(Torpedo Attack No.1)

ConvoyHunting · 06-01-22, 12:34 PM

Bubblehead1980, excellent patrols and reports as usual.

Keep up the good work and remains agressive !

Bubblehead1980 · 06-02-22, 01:06 AM

Quote:

Originally Posted by ConvoyHunting

Bubblehead1980, excellent patrols and reports as usual.

Keep up the good work and remains agressive !

Bubblehead1980 · 06-02-22, 09:00 PM

War Patrol Report
USS CISCO SS-290
Fourth War Patrol
March 5-April 9, 1944

PROLOGUE
--------------

Arrived Brisbane, Australia from THIRD War Patrol on January 31, 1944. Normal refit was conducted by base personnel.
APR-1 Radar Warning Receiver installed. CISCO was dry docked on 10 February in order to apply new Measure 32 paint scheme
for reduced visibility. Painting completed on 23 February.

Executive Officer, LCDR A.F. Weinel, USN, detached. LCDR J.D. Miller, USN, designated as Executive Officer.
Ensign C.D. Calder, USNR, and Ensign W.F. Henderson, USNR, reported aboard 24 February.

Training period conducted in Moreton Bay area 26 February-1 March.
Twenty four MK 23-1 torpedoes and all provisions loaded 2-4 March.
Ready for sea 5 March 1944.

NARRATIVE
----------

0800 Departed Brisbane, Australia in company with HADDO per CTF Operation Order 36-44. Assigned to conduct patrol operations South of Palau
through 29 March and then unless otherwise instructed, assume lifeguard
station in support of airstrikes scheduled for 30 March.

0914 APR-1 detected radar emissions of escort bearing 005.

0942 Rendezvoused with escort.

0950 Proceeded through minefield with escort and HADDO.

1400 Escort detached. Continued on with HADDO. Course 005 for
Milne Bay en route assigned area. Conducted sighting drills and tuning of
SJ radar with HADDO. APR-1 detected HADDO's SJ signals.

1508 Trim Dive.

1530 Surfaced.

2100 Conducted night sighting drills as HADDO also sporting newly applied
MS 32. Difficult to visually spotted HADDO at 2000+ plus yards with
small AOB.

2300 Upon conclusion of sighting drills. Formed patrol line with HADDO
10 miles apart en route Milne Bay.

March 6
----------

En route Milne Bay.

1532 APR-1 detected radar signals bearing 160.

1534 SD contact made at 21000 yards. (Aircraft Contact No.1)

March 7
----------

2226 Parted company with HADDO, set course for Jomard Pass en route
Milne Bay.

March 8
----------

En route Milne Bay.

March 9
----------

1100 Docked at tender U.S.S. Fulton, Milne Bay. Topped off
fuel and provisions.

1630 Departed Milne Bay for assigned area.

March 10
-----------

En route area.

March 11
---------

0754 SJ contact 28250 yards bearing 002. (Ship Contact No.1)
Likely friendly patrol in Vitiaz Strait. Avoided.

March 12-14
------------

En route area.

March 15
---------

0000 Entered patrol area 175 NM SE of Palau.

March 16
----------

0630 Dawn rain showers, heavy fog, choppy seas.

1200 Storms cleared. Calm seas, clear visibility.

1251 APR-1 detected radar emissions bearing 125.

1252 SD contact 14000 yards closing. Dive! (Aircraft Contact No.2)

1254 CISCO at 150 ft. Two large explosions forward, not close.

1719 APR-1 detected radar emissions bearing 280. No SD contact. Submerged
to avoid likely aircraft searching area.

2000 Surfaced.

March 17
---------

Patrol in area.

March 18
---------

Patrol in area.

Heavy seas, overcast, moderate do. Winds
30 knots direction 260.

1320 SD contact 21500 yds.(Aircraft Contact No.3)
Dive.

1554 Surfaced.

March 19
---------

Patrol in area.

March 20
---------

Patrol in area.

March 21
----------

Patrol in area.

0300 Received ULTRA regarding enemy submarine departing Southern entrance Palau
lagoon 23 March.

March 22
----------

Set course to take position South of Palau.

1124 Submerged for patrol 25 miles West of Angaur Island.

2030 Surfaced.

March 23
------------

TORPEDO ATTACK NO.1
----------------------------

0505 SJ contacts bearing 013 29000 yards. (Ship Contact No.2)
Turned to intercept.

0507 Contacts appeared to be convoy approaching Southern entrance to Palau.

0509 GENERAL QUARTERS-TORPEDO-SUBMERGED.

0513 Submerged for attack at dawn before convoy entered lagoon.

0604 One AK leading a AO, one DE escorting, course 070 10 kts.

0616 Fired tubes 1,2,3 at AO. Fired tubes 4,5,6 at AK.

0617 Torpedo impact! Torpedo impact! Torpedo impact!

AO burning, keel busted.

0618 Torpedo impact on AK bow! Other two missed ahead as AK slowed.

0620 Pinging. DE closing. Rigged for Silent Running and Depth Charge.
Ordered 450 ft.

0624 DE overhead. CISCO AT 350 FT. Splashes! (Depth Charge Attack No.1)

0625 DC explosions. Two close. Boat shaken.
Damage reported (See DAMAGE AND DEFECTS)

0627 Close DC.

0641 Close DC.

0646 DE crossed off bow of CISCO. Many splashes heard.

0648 Close DC. Boat Shaken. Depth 575 ft.

0654 After going "silent for several minutes, enemy began
to ping and close from astern.

0656 DC explosions, not close.

0700 Pinging. More DC explosions, not close.

0701 Pinging.

0704 Pinging ceased.

0706 Pinging resumed.

0707 CISCO at 580 ft.

0709 DD above, splashes.

0711 Many DC explosions.

0715 DD above, from astern.

0716 Many splashes and explosions.

0717 Many DC explosions.

0722 DE above. CISCO at 600 ft.

0723 Splashes.

0724 DC explosion, close. Boat shaken.

0737 More DC explosions, astern.

0840 Lost contact with enemy. CISCO at 650 ft.

0943 Secured Silent Running. Ordered bow tubes reloaded.

1023 Many prop noises bearing 302 long range. Ordered periscope depth.

1035 Periscope depth. Sighted convoy bearing 234 8 miles. Convoy
departing Palau. Two AO, four AK, two DE. Course 270 9 kts.
Contact Report sent to CTF 72. (Ship Contact No.3)

Due to battery limitations unable to close for attack submerged.
Waited for convoy clear area for end around. Secured GQ.

1118 Received orders from CTF-72 not to engage convoy,
other assets will be directed to intercept.

1201 Lost visual and sound contact with convoy.
Set course to return for intercept of enemy sub
due to depart Palau, although it is likely sub
rerouted after attack.

1204 Enemy DE from Torpedo Attack No.1 still in area, hunting.

1453 Periscope depth. Spotted Aircraft(MAVIS) bearing 055 16200 yards,
circling above scene of morning attack, where DE still present.
(Aircraft Contact No.4)

2000 Surfaced.

2109 Stopped to listen with hydrophones.

2111 Sound contact, faint, bearing 347.
Turned to investigate. (Ship Contact No.3)

TORPEDO ATTACK NO.2
-----------------------------
2114 Submarine spotted! Bearing 357 9000 yards.
No SJ contact. GENERAL QUARTERS-TORPEDO-SURFACE.

2117 Contact zigging on base course 195. 10 kts.

2135 Readied tubes 7,8,9,10 to fire.

2136 Solution plotted to fire torpedoes on individual
bearings aimed at middle of target, Aft and forward
to cover the sub during zigs.

2140 Fired tubes 7,8,9,10 at I Class Submarine. 3050 yds.

2142 Torpedo impact on stern as target zigged to starboard(away) from
CISCO. Large explosion, followed by two more
large secondary explosions, likely torpedoes cooking off from impact.
Submarine sunk in 43 seconds.

2144 Three other torpedoes missed, reached end of run.

2200 Secured GQ. Departed area to allow it to "cool down."

March 24
------------

0725 Submerged for the day to rest, repair, an avoid storms.

2000 Surfaced.

March 25
---------

0400 Weather cleared. Calm seas.

0954 Radar emissions detected bearing 350 15000+ yards. Judged to be likely
aircraft due to rapid bearing change. Submerged to avoid.

March 26
----------

Patrol in area.

March 27
----------

1634 SD Contact 10000 yards, closing!. Dive! (Aircraft Contact No.5)

1635 Explosions, above. CISCO at 145 ft.

2100 Surfaced.

March 28
----------

1524 Aircraft spotted! bearing 085 7500 yards. Dive! (Aircraft Contact No.6)
Dive! SD did not detect AC.

1525 As passed 84 feet, several large explosions, close. Only damage
was a few broken light bulbs and glass fixtures.

2000 Surfaced. Overcast, light fog. Winds 11 knots, direction 020.
Light chop.

March 29
----------

Patrol in area.

2214 Arrived at Lifeguard station 10 NM East of Palau for DESECRATE I.

March 30
----------

Torpedo Attack No.3
--------------------

0006 SJ contacts bearing 334 24000 yds. (Ship Contact No.4)

0025 GENERAL QUARTERS-TORPEDO-SURFACE

0034 APR-1 detected radar emissions. Contact range 4200 yards.

0034: Shell splashes! 35 yards, astern!. Dive!
51

0035 Passed 80 ft, rigged for silent running and depth charge.

0042 500 ft. Turned to closest escort to minimize profile to beam.

0043 Pinging began (Depth Charge Attack No.2)

0044 Enemy passed above. Did not drop DC as expected.

0045 Pinging from second escort. Turned to minimize profile.

0046 Enemy above. Many splashes.

0047 Many DC explosions. Boat shaken.

0050 Enemy above splashes.

0051 DC explosions.

0052 Many DC explosions astern.

0056 Enemy astern closing fast. Short scale pinging.

0057 Splashes. Enemy above.

0059 Explosions. Boat shaken.

0100 Second enemy above. Splashes.

0101 Explosions.

0102 Many more splashes ahead.

0102: Many explosions. Close. Boat shaken. Damage reported (
30 See DAMAGE AND DEFECTS).

0106 CISCO at 600 ft. Enemy passed above. Splashes.

0109 Explosions above. CISCO at 675 ft.

0126 A loss of control of boat led us to 730 feet before gained control.

Enemy seemed to be unable to track us at this depth.
They continued to unload depth charges at last contact location
and along estimated course. All charges were above.

0140 Splashes above.

0142 Explosions, above somewhat close. Boat shaken. Leaks in conning tower, forward control room.

0144 Leaks under control. (See DAMAGE AND DEFECTS)

0146 More explosions, not close.

0211 Enemy seemed to finally lose contact. Many DC explosions astern
continued for some time.

0330 Last DC explosion heard astern, distant.

0335 SJ sweep at radar depth.

0340 Surfaced

0345 Secured GQ. Recharge batteries, repair damage.
Set course for lifeguard station.

0817 SD contacts 14000 yards. (Aircraft Contact No.7)

0819 Spotted friendly air strikes inbound. TBF, SB2C, SBD, F6F.

0820 Witnessed midair collision parachutes observed, splashed in water.
Smoke marker visible. Set course to pick up at flank speed.

0823 Second smoke marker observed.

0832 SD contact 12000 yards closing. Simultaneously spotted downed aviator
021. Dive! Spotted a MAVIS bearing 270.(Aircraft Contact No 8)

0834 Explosions, astern.

0840 GENERAL QUARTERS. Standby for rescue and Anti-Aircraft.

0845 Periscope depth. Spotted raft with downed aircrew bearing 061 4000 yds.
Surfaced.

0850 Rescued aircrew in raft. (Rescue No.1)

0908 Rescued downed aviator. (Rescue No.2)

1304 Rescued downed aviator. (Rescue No.3)

1900 Last strike concluded. Per operation order, set course
for Yap in support of strikes on 31 March.

March 31
---------

0425 Arrived at Lifeguard Station 10 NNE of Yap.

0600 Submerged.

0700 Sound contact: Warship bearing 358 long range, medium speed,
moving away.(Ship Contact No.5)

0840 Raised SD antenna to detect strike.

0846 Observed air strike on harbor. One AK one SC sunk by dive bombers.

0851 Parachutes spotted, landed inland, not near shore.

1900 Spotted raft with aircrew and downed aviator in water.
Surfaced.Rescue stations manned.

1905 Rescued up TBF aircrew in raft. (Rescue No.4)

1915 Rescue downed SBD pilot in water. (Rescue No.5)

1920 Spotted smoke marker bearing 015.

1950 Spotted two men in water.
Assumed rescue stations.

2001 Rescued two downed aircrew. (Rescue No.6)

2002 Continued to search area of Yap down downed
aircrews.

April 1
--------

0000 Released from Lifeguard Station per CTF-72.
Ordered to new patrol area SSW of Guam.
Set course at standard speed.

0701 Dawn. Aircraft spotted bearing 190 6000 yds, altitude 500 ft, closing! (Aircraft Contact No.9)
Dive! SD failed to detect low flying aircraft.

0702 As CISCO passed 67 ft, three large explosions, boat shaken severely,
damaged reports piled in (See DAMAGE AND DEFECTS).

0703 Flooding in multiple compartments.

0704 Damage Control Party formed.

0706 Boat sunk to 180 ft. Two more large explosions, above.

0707 Flooding controlled in Forward torpedo, Aft torpedo, and both Engine rooms.
Flooding in conning tower and control room continued, most serious in conning
tower.

0709 Flooding in conning tower and control room contained.
Boat heavy and trim pump severely damaged, unable to maintain exact
depth bounced between 190 and 250 ft.

0710 Engineering reported battery capacity at just 30 percent, aft batteries damaged
severely.

0730 Boat began to sink at uncontrolled rate due flooding
and loss of power and trim pump, inability to compensate

Ordered standby for Battle Surface-Anti-Aircraft.

0731 Blew ballast tanks for emergency surface!

0733 Surfaced. AA guns manned. No aircraft in sight.

0734 Set course to South with guns manned while emergency repairs continued.

1101 Water pumped from all compartments. Trim pump reported damaged beyond repair.

1120 Inspection revealed hull damage, with trim and hydraulic pumps damaged beyond repair. Batteries no holding full charge. JP sonar inoperative. Repairs continued.

1301 APR-1 detected radar emissions bearing 200. Submerged
to avoid likely aircraft. Struggled to maintain depth between 100-150 feet.

1430 Surfaced.

2300 Considering heavy damage to CISCO, sent report to CTF-72 and set
course for Brisbane.

April 2-3
---------

En route Brisbane.

April 4
---------

1800 SJ contact 27000 yards. (Ship Contact No. 6)

1835 Exchanged recognition signals with two US DD.
Patrol in Vitiaz Strait.

April 5-8
---------

En route Brisbane.

April 9
----------

1035 Docked at Brisbane, Australia. Terminated war patrol.

WEATHER
--------------

Weather in area was overall pleasant, with squalls quickly arriving and departing,
quite normal for the area.

NAVIGATIONAL AIDES
----------------------------

Lights on Palau, Angaur, Peleliu, and Yap Islands
all provided aides in navigation.

CONTACTS
----------------

Aircraft
---------

NO.1
DATE 1944/03/06
TIME 1534
LAT 22-2S
LOG 153-51E
BRG 160*
RNG 21000 yards.
ALT --
CRS --
SPD --
HOW SJ,APR-1
TYPE --
REMARK
*Bearing based on APR-1 RWR bearing.

NO.2
DATE 1944/03/16
TIME 1252
LAT 5-30N
LOG 134-40E
BRG 125*
RNG 14000 yds
ALT --
CRS --
SPD --
HOW SD,APR-1
TYPE --
REMARK
* Based on APR-1 RWR bearing.

NO.3
DATE 1944/03/18
TIME 1320
LAT 4-50N
LOG 134-50E
BRG --
RNG 21500 yds
ALT --
CRS --
SPD --
HOW SD
TYPE --
REMARK

NO.4
DATE 1944/03/23
TIME 1320
LAT 7-03N
LOG 134-07E
BRG 055
RNG 16200 yds
ALT 1200 ft
CRS --
SPD 125 kts
HOW Visual
TYPE MAVIS
REMARK
Contact circled scene of Torpedo Attack No.1

NO.5
DATE 1944/03/27
TIME 1634
LAT 4-50N
LOG 134-40E
BRG --
RNG 10000 yds
ALT --
CRS --
SPD --
HOW SD only
TYPE --
REMARK
Bombed by contact.

NO.6
DATE 1944/03/28
TIME 1524
LAT 5-10N
LOG 132-50E
BRG 085
RNG 7500 yds
ALT 2000
CRS 200
SPD 200 kts
HOW Visual
TYPE KATE
REMARK
Bombed by contact.

NO.7
DATE 1944/03/30
TIME 0817
LAT 7-13N
LOG 134-32E
BRG 040
RNG 14000 yds
ALT 12000 ft
CRS 310
SPD 200 kts
HOW SD-Visual
TYPE TBF,SB2C,SBD,F6F
REMARK

NO.8
DATE 1944/03/30
TIME 0832
LAT 7-13N
LOG 134-32E
BRG 270
RNG 12000 yds
ALT 2000
CRS 100
SPD 150 kts
HOW SD,Visual
TYPE MAVIS
REMARK
Bombed by contact during rescue attempt
of downed aviator.

NO.9
DATE 1944/03/31
TIME 0701
LAT 11-0N
LOG 139-0E
BRG 190
RNG 6000 yds
ALT 500 ft
CRS 200
SPD 250 kts
HOW Visual only
TYPE BETTY G4M
REMARK
Bombed by contact at dawn. Heavy damage.
SD did not detect low flying contact.
APR-1 detected no radar emissions.

Ships
------

NO.1
DATE 1944/03/11
TIME 0754
LAT 5-50N
LOG 147-30E
BRG 002
RNG 28250 yds
CRS --
SPD --
HOW SJ
TYPE --
REMARK

Patrol in Vitiaz Strait. Likely friendly. Avoided.

NO.2
DATE 1944/03/23
TIME 0505
LAT 7-03N
LOG 134-07E
BRG 013
RNG 29000 yds
CRS 070
SPD 10 kts
HOW SJ-Visual
TYPE AK,AO,DE
REMARK
TORPEDO ATTACK NO.1

NO.3
DATE 1944/03/23
TIME 1035
LAT 7-03N
LOG 134-07E
BRG 302
RNG 16200 yds
CRS 070
SPD 10 kts
HOW Sound(JP)-Visual
TYPE AK,AO,DE
REMARK
Contact Report sent to CTF-72
Serial 03234411.

NO.3
DATE 1944/03/23
TIME 2111
LAT 6-52N
LOG 134-0E
BRG 347
RNG 13000 yds*
CRS 195
SPD 10 kts-zigging
HOW Sound-Visual
TYPE SS
REMARK
Torpedo Attack No.2
* Estimated range at time of sound contact.
Visual contact established at 9000 yds

NO.4
DATE 1944/03/30
TIME 0006
LAT 7-9N
LOG 134-35E
BRG 334
RNG 24000 yds
CRS 040
SPD 15 kts
HOW SJ,Visual, APR-1
TYPE DE,SC
REMARK
ASW patrol.
Depth Charge Attack No.2

NO.5
DATE 1944/03/31
TIME 0700
LAT 9-39N
LOG 138-4E
BRG 358
RNG 15000+ yds
CRS --
SPD 11 kts
HOW Sound only (JP)
TYPE Warship-Unknown. Likely PC.
REMARK

NO.6
DATE 1944/04/04
TIME 1800
LAT 5-52S
LOG 147-41E
BRG 358
RNG 27000 yds.
CRS 004
SPD 16 kts
HOW SJ-Visual
TYPE DD,DD
REMARK
USN patrol in Vitiaz Strait. Exchanged recognition
signals.

ATTACKS
--------------

USS CISCO SS-290 TORPEDO ATTACK NO.1
WAR PATROL NO.4 DATE: March 23, 1944 TIME: 0616
LAT:7-03N LOG: 134-07E

------------------------------------------------

TYPE OF ATTACK Submerged-Periscope-Dawn

SHIPS SUNK

AO ARARE MARU 2800 tons

Verification:

Observed three torpedoes hit target. Turned burned profusely,
keel split in two.

SHIPS PROBABLY SUNK

SHIPS DAMAGED

AK SURABAYA MARU 5186 tons

Verification:

Observed torpedo hit bow. Bow severely damaged.

SHIPS PROBABLY DAMAGED

TARGET DATA (at firing)
--------------------------------

CLASS AO
NAME ARARE MARU
TONS 2800
DRAFT 14.8 ft
MAST 90.9 ft
CRS 070
SPD 10 kts
AOB 78 P
RNG 2280 yds
BRG 026
TRUE BRG 185
REMARK
Target No.1

CLASS AK
NAME SURABAYA MARU
TONS 5186
DRAFT 15.7 ft
MAST 94.5 ft
CRS 070
SPD 10 kts
AOB 93 P
RNG 1986 yds
BRG 355
TRUE BRG 155
REMARK
Target No.2

TORPEDO FIRE CONTROL DATA (at firing)
-------------------------------------

TUBE NO.1
TYPE MK 23-1
SERIAL NO.46500
EXPLODER MK 6-4
SERIAL NO.17500
GYRO 016 L
COURSE 175
TRACK 78 P
METHOD Single Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 6 ft
POA MOT
ACTUATION Contact
ACTUAL ACTUATION Contact
HIT Yes
POI MOT
ERRATIC
MALFUNCTION
REMARK

TUBE NO.2
TYPE MK 23-1
SERIAL NO.46501
EXPLODER MK 6-4
SERIAL NO.17501
GYRO 016 L
COURSE 175
TRACK 78 P
METHOD Single Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 6 ft
POA MOT
ACTUATION Contact
ACTUAL ACTUATION Contact
HIT Yes
POI MOT
ERRATIC
MALFUNCTION
REMARK

TUBE NO.3
TYPE MK 23-1
SERIAL NO.46502
EXPLODER MK 6-4
SERIAL NO.17502
GYRO 016 L
COURSE 175
TRACK 78 P
METHOD Single Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 6 ft
POA MOT
ACTUATION Contact
ACTUAL ACTUATION Contact
HIT Yes
POI MOT
ERRATIC
MALFUNCTION
REMARK

TUBE NO.4
TYPE MK 23-1
SERIAL NO.46503
EXPLODER MK 6-4
SERIAL NO.17503
GYRO 341 L
COURSE 141
TRACK 108 P
METHOD Single Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 7 ft
POA MOT
ACTUATION Contact
ACTUAL ACTUATION Contact
HIT Yes
POI Bow
ERRATIC No
MALFUNCTION No
REMARK

TUBE NO.5
TYPE MK 23-1
SERIAL NO.46504
EXPLODER MK 6-4
SERIAL NO.17504
GYRO 341 L
COURSE 141
TRACK 108 P
METHOD Single Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 7 ft
POA MOT
ACTUATION Contact
ACTUAL ACTUATION --
HIT No
POI --
ERRATIC No
MALFUNCTION No
REMARK
Missed ahead when target slowed after impact
on Target No.1 alerted.

TUBE NO.6
TYPE MK 23-1
SERIAL NO.46505
EXPLODER MK 6-4
SERIAL NO.17505
GYRO 341 L
COURSE 141
TRACK 108 P
METHOD Single Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 7 ft
POA MOT
ACTUATION Contact
ACTUAL ACTUATION --
HIT No
POI --
ERRATIC No
MALFUNCTION No
REMARK
Missed ahead when target slowed after impact
on Target No.1 alerted.

OWN SHIP DATA (at firing)
--------------------------

DEPTH 64 ft
COURSE 168
SPEED 2.5 kts
ANGLE 1-down
SEA STATE Light Chop
REMARK
Pre-dawn, half moon.

__________________________________________________ ___________

USS CISCO SS-290 TORPEDO ATTACK NO.2
WAR PATROL NO.4 DATE: March 23, 1944 TIME: 2140
LAT:6-52N LOG:133-56 E

------------------------------------------------

TYPE OF ATTACK Night-Surface-Torpedo

SHIPS SUNK
I-Class Submarine 1800 tons

12.5 miles West of Angaur Island, Palau.

Verification:

Observed torpedo hit target in stern as target
zigged to starboard away from two other torpedoes. Hit caused massive explosion,
followed by two larger secondary explosions. This is likely as a result of
hit on aft torpedo room, igniting torpedoes. Submarine burned profusely and sunk
in 43 seconds.

SHIPS PROBABLY SUNK
None

SHIPS DAMAGED
None

SHIPS PROBABLY DAMAGED
None

TARGET DATA (at firing)
--------------------------------

CLASS SS
NAME I-Class Submarine
TONS 1800
DRAFT 16.9 ft
MAST --
CRS 195
SPD 10 kts
AOB 70 P
RNG 3050 yds
BRG 188
TRUE BRG 292
REMARK
Target zigging on base course.

TORPEDO FIRE CONTROL DATA (at firing)
-------------------------------------

TUBE NO.7
TYPE MK 23-1
SERIAL NO.46517
EXPLODER MK 6-4
SERIAL NO.17517
GYRO 357 L
COURSE 101
TRACK 98 P
METHOD Constant Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 5 ft
POA MOT
ACTUATION Contact
ACTUAL ACTUATION --
HIT No
POI --
ERRATIC No
MALFUNCTION No
REMARK
Missed

TUBE NO.8
TYPE MK 23-1
SERIAL NO.46518
EXPLODER MK 6-4
SERIAL NO.17518
GYRO 357 L
COURSE 101
TRACK 98 P
METHOD Constant Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 5 ft
POA MOT
ACTUATION Contact
ACTUAL ACTUATION --
HIT No
POI --
ERRATIC No
MALFUNCTION No
REMARK
Missed

TUBE NO.9
TYPE MK 23-1
SERIAL NO.46519
EXPLODER MK 6-4
SERIAL NO.17519
GYRO 357 L
COURSE 101
TRACK 98 P
METHOD Constant Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 5 ft
POA Stern
ACTUATION Contact
ACTUAL ACTUATION Contact
HIT Yes
POI Stern
ERRATIC No
MALFUNCTION No
REMARK

Torpedo impacted as "up the pipe" as target turned away avoiding first two torpedoes.
Massive explosion and secondary explosions likely from impact in aft torpedo room.

TUBE NO.10
TYPE MK 23-1
SERIAL NO.46520
EXPLODER MK 6-4
SERIAL NO.17520
GYRO 357 L
COURSE 101
TRACK 98 P
METHOD Constant Bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Standard
DEPTH 5 ft
POA Bow
ACTUATION Contact
ACTUAL ACTUATION --
HIT No
POI --
ERRATIC No
MALFUNCTION No
REMARK
Missed forward, after torpedo impact (Tube 9) sunk target.

OWN SHIP DATA (at firing)
--------------------------

DEPTH Surfaced
COURSE 295
SPEED 5 kts
ANGLE 0-Up/Down
SEA STATE Calm
REMARK
Backed down to close range on zigging submarine.
Timed the zigs fired each torpedo on individual bearings for coverage
,expected one would hit as target zigged along base course.

ANTI-SUBMARINE COUNTERMEASURES AND EVASION
-----------------------------------------------------------------------

Enemy ASW was much improved over previous encounters,
with apparent improved sound equipment and depth charges.

Depth Charge Attack No.1
--------------------------------------------
1944-03-23

After Torpedo Attack No.1, the
escorting Momi Class Destroyer (now a DE) conducted a aggressive
and persistent attack, headed by a skilled Captain and crew.

Almost immediately after torpedo impact revealed CISCO's presence,
the escort pinged and located CISCO, rushing in. This prevented CISCO
from obtaining desired deep submerged prior to first salvo of depth charges,
forcing her to endure the barrage at "shallow" depth of 350 ft.

Attack continued for several hours, with CISCO reaching depth of 675 ft in order
to escape. Enemy remained in area throughout the day, with air patrols assisting. This
prevented CISCO operating in area as planned.

Depth Charge tally for this attack: 105

Evasion was fairly standard for CISCO was depth, course, speed changes,
and "bursts" of speed when enemy was above or nearby conducting depth charge run.
Depth of 675 ft in this instance seemed to cause enemy to lose sonar contact.

Enemy vessels are absolutely believed to now be equipped with
a more advanced and powerful depth charge.

Depth Charge Attack No.2
-----------------------------------
1944-03-30

Two contacts tracking east of Palau turned out to be a patrol of one DD and one
Subchaser. As APR-1 did not detect enemy radar signals during entire approach, it is believed enemy
had radar set switched off. Low visibility due to clouds and fog at night
prevented timely visual identification.

When Cisco was at 4500 yards roughly from lead vessel, APR-1 detected radar emissions
from the contacts bearing. Suddenly, gunfire erupted with shell splashes landing close
to CISCO. This prompted a quick dive to avoid.

Enemy pinging and attack began soon after. As a dedicated ASW patrol,
both vessels were obviously manned by skilled crews with best equipment, making evasion
a challenge. CISCO went to 675 ft once again to escape.

While enemy active sonar ceased, it appeared they maintained some type of hydrophone contact
as stayed quite close to CISCO dropping many charges. Most detonated well above, but
boat was shaken and some minor damage occurred from shockwaves at such depth.

Evasion consisted of course, speed, and depth changes, as well as submergence
to 675 ft.

Depth Charge tally for this attack was 171.

Airborne ASW
-------------------

Enemy aircraft in the Palau area were effective ASW patrols, forcing
multiple dives and bombing CISCO multiple times.

One low flying BETTY at dawn on 1 April, managed to fly in to just 6000 yards before detection,
dropping 3 depth charges/bombs along side CISCO as she submerged, causing heavy damage
and requiring return to port to terminate patrol.

Multiple enemy aircraft were equipped with radar and APR-1 typically detected
radar emissions before SD contact was made.

Some enemy aircraft appeared to turn radar on and off at intervals, likely
aware we may have radar detection equipment.

MAJOR DAMAGE AND DEFECTS
--------------------------------------

All damage repaired at sea unless otherwise noted.

Depth Charge Attack No.1
--------------------------------
1944-03-23

1. Compressor
2. Leaks in Forward Torpedo Room
3. Leaks in Control Room
4. Leaks in Conning tower.
5.Light bulbs
6.Glass fixtures
7.High Pressure Air Lines.

Depth Charge Attack No.2
--------------------------------
1944-03-30

1.Flooding-Forward Torpedo Room. 1 ft water.
Pumped out.

2.Forward Dive Planes Transmission

3.Torpedo Tube No.6

4.Compressor

5. Hydraulic Pump

6.No.2 Electric Motor

7. No.4 Electric Motor

8. Leak-Flooding Forward Engine Room. 1/2 ft water pumped out.

9. Stern Dive Planes Transmission-Temporarily disabled.

10. High Pressure Air line leaks in conning tower and control room.

11. Piping leaks in all compartments.

12. Light bulbs

13. Glass fixtures.

Bombing by Aircraft on 1 April 1944
-------------------------------------------

1.Flooding Forward Torpedo Room

2.Flooding Conning Tower

3. Flooding Control Room

4. Flooding Crew Berthing

5. Flooding Forward Engine Room

6. Flooding Aft Engine Room

7. Flooding Stern Torpedo Room.

8. Trim Pump Disabled-Unable to repair at sea.

9. Hydraulic Pump disabled temporarily.

10. Hull damage-Conning Tower and Control room compartments.
(Registered at 40 percent)

11. Aft Batteries severely damaged. Unable to completely repair at sea
Batteries would not recharge beyond 73 percent for duration of patrol.

12. JP Sonar disabled temporarily. Repaired, but did not
regain full function for duration of patrol.

13.No. 1 Diesel

14. No.3 Diesel

15. No.1 Electric Motor

16. No.2 Electric Motor

17.Rudder Transmission

18. High Pressure air line leaks in all compartments

19. Piping leaks in all compartments.

20. Lightbulbs

21. Glass fixtures.

22. Fuel leak. While capacity remained sufficient for trip to Brisbane
fuel was burned faster than should at given speed, a small, slow leak was discovered.

No material defects outside of battle damage.

MINES
-------

1944/04/06 0227
10-46S 152-5E
Spotted floating mine in Jomard Pass,
detonated with 20mm gunfire.

RADAR
-------

SJ

SJ radar performance was again overall excellent. Typical detection
range on contacts was 28000-29000 yards. PPI scope again proved a real asset.

A curious exception to the performance was failure to detect a surfaced enemy submarine
(Torpedo Attack No.2). Check of equipment showed performing well. Low profile of enemy
boat appeared enough to evade SJ detection.

SD

SD performance was normal, with typical detection range around 13000 yards.

As always, low flying aircraft were not always detected. This lead
to a bombing at dawn on1 April that caused heavy damage to CISCO and
termination of patrol.

RADAR COUNTERMEASURES
--------------------------------------

APR-1 typically detected enemy radar emissions around
10-12 nautical miles, depending on conditions.

SOUND GEAR AND SOUND CONDITIONS
-------------------------------------------------

Performance of JP listening gear was overall excellent with contacts
detected at 15,000 plus yards, and precise tracking possible in most conditions
at 10000 yards or less.

Performance declined for duration of patrol after damaged by aircraft attack.

THERMAL LAYERS
--------------------------

One thermal layer was detected during Depth Charge Attack No.1 at 201 ft.

RADIO
--------

Radio performance was normal and satisfactory.

TORPEDO PERFORMANCE
---------------------------------

Performance of the new MK 23 torpedo was excellent with no known malfunctions.
These torpedoes sunk a tanker, submarine, and severely damaged at cargo vessel.

Using Contact only detonators without Magnetic Influence has proven
to drastically increase torpedo performance on last two patrols.

LIFEGUARD OPERATIONS
------------------------------------

Lifeguard operations were conducted in support of Operation Desecrate I,
strikes on Palau (30 March) and Yap (31 March).

Lifeguard Station No.1
10 NM East of Palau

Lifeguard Station No.2
10 NM NNE of Yap

Rescues
-----------

NO.1
DATE 1944/03/30
TIME 0850
LAT 7-15N
LOG 134-37E
TYPE: Raft-Aircrew
RESCUED
Ens. R.F. Verlig, USNR. VB-17, Bunker Hill CV-17
ARM2c C.T. Foster, USN. VB-17, Bunker Hill CV-17

Remark.
Downed in mid-air collision.

No.2
DATE 1944/03/30
TIME 0908
LAT 7-15N
LOG 134-37E
TYPE: Aviator in life preserver.
RESCUED
LT. I.H. Macone, USN. VF-31,Cabot CVL-28
Downed in mid-air collision.

No.3
DATE 1944/03/30
TIME 1304
LAT 7-15N
LOG 134-37E
TYPE: Aviator in life preserver.
RESCUED
LT (jg) J.F. Halacre, USN. VF-23, Princeton CVL-23.
Shot down by AA fire. Rescued 3 NM SSE of Peleliu.

No.4
DATE 1944/03/30
TIME 1905
LAT 9-27N
LOG 138-17E
TYPE: Raft
RESCUED
Ens. P.C. Potter, USN. VT-16, Lexington CV-16
LT (jg) T.Y. Jones, USNR. VT-16, Lexington CV-16
AARM3/c G.G. Poznyck, USN. VT-16, Lexington CV-16

REMARK

TBF hit by AA fire over Yap at 1141, ditched when engine quit
just after bomb run.

No.5
DATE 1944/03/30
TIME 1915
LAT 9-26N
LOG 138-23E
TYPE: Aviator in life preserver.
RESCUED
LCDR L.C. Huntley, USN. VF-12, Hornet CV-12

REMARK

F6F caught fire after AA hit while strafing AA positions
in support of SB2C strikes at 1540. Lost raft
in bail out. Ankle sprained, treated by PhM.
Full recovery expected.

No.6
DATE 1944/03/30
TIME 2001
LAT 9-25N
LOG 138-27E
TYPE: Two aviators in water together.
RESCUED
LT. A.Z. Powell, USN. VB-10, Enterprise CV-6
CDR T.B. Bontier, USNR. Enterprise CV-6

REMARK
SBD hit by AA fire over Yap. Attempted to make it
back to ship, engine failed. CDR Bontier member
of staff, along as radio/observer/gunner
in lieu of usual man. Rafts lost in bail out
Bailed out at 1131.

PERSONNEL
----------------

Crew performance on this busy and trying patrol was excellent.
Underway routine included schools for Qualification and Advancement.
Two new Officers, both Reservists were on board for their first patrols
and performed well. Both qualified as Assistant Officers of the Deck.

Officers:8
Qualified:6

Chief Petty Officers: 8
Qualified:8

Men: 64
Qualified:42

Men Qualified during patrol: 5

Men Advanced in Rating: 8

Total Aboard: 80
Average Age: 21

HEALTH AND HABILITABILITY
-------------------------------------

Habitability of the boat was overall excellent. Meals were well prepared.

After a severe jolt and damage by air attack, repairs were made and boat was cleaned up
in short order, much as possible while at sea.

Health of crew was overall excellent. Fortunately,
only minor injuries consisting of scrapes and bumps
occurred from attacks.

Two men in after torpedo were treated for combat fatigue and returned to watch,
but detached upon return to Brisbane.

MILES STEAMED-FUEL CONSUMED
----------------------------

Brisbane to Milne Bay
Miles: 1090 miles
Gallons: 15050

Milne Bay to Area
Miles:1435
Gallons:23250

In Area
Miles:5000
Gallons:44200

Area to Lifeguard Station No.1
Miles:200
Gallons:1500

Lifeguard Station No.1 to Lifeguard Station No.2
Miles:200
Gallons:3650

Lifeguard Station No.2 to Area
Miles:550
Gallons:5400

Area to Brisbane
Miles:2550
Gallons:39200

DURATION OF PATROL
--------------------

Brisbane to Milne Bay
Days: 4

Milne Bay to Area
Days:5

In Area
Days: 15

Area to Lifeguard Station No.1
Days:.5

On Lifeguard Station No.1
Days:1

Lifeguard Station No.1 to Lifeguard Station No.2
Days:.5

On Lifeguard Station No.2
Days:1

Lifeguard Station No.2 to Area
Days:1

Area to Brisbane
Days:9

FACTORS IN ENDURANCE
--------------------

Torpedoes 14
Fuel 42200 gallons
Provisions 52 days
Crew Indefinite

Major factor in termination of patrol:

Battle damage-Heavy.

REMARKS
------------

A successful but challenging patrol cut short by unexpected heavy damage
from air attack. Ten downed aviators and crew rescued in lifeguard operations
are considered the highlight of this patrol, even with the sinking of
a tanker and enemy submarine, in addition to severely damaging a merchant
vessel.

CISCO's Balao Class design proved quite tough, standing up to operations
at extreme depths while being depth charged severely. Survival of the air attack
given the close proximity of the air dropped depth charges/bombs is a testament to stout construction.

Performance of SD radar versus low flying aircraft is ongoing issue of concern, which led to the heavy damage suffered on this patrol. As such, it is hoped the SD is improved in order to prevent such incidents in the future.

J.W. Coe

Bubblehead1980 · 06-02-22, 09:34 PM

Bubblehead1980 · 06-04-22, 05:09 PM

TMO Update BH V2.0
100 difficulty. Cams and map contacts off.

War Patrol Report
USS CISCO SS-290
Fifth War Patrol
May 31-June 27,1944

PROLOGUE
----------

Arrived Brisbane, Australia from Fourth War Patrol on April 9, 1944.
Inspection of battle damage commenced immediately with repairs commencing soon after.
Entered drydock for hull repairs 25 April-6 May. New Trim and Hydraulic Pumps installed.
These pumps are said to be quieter than predecessors. New stern batteries installed.

Four inch inch forward deck gun
removed, replaced with new Five Inch Twenty-Five Caliber "Wet Mount" gun. Aft 20mm
removed, replaced to 40mm Bofors cannon.

LT (jg) R.M. Greco, USN., and Ensign George S. Gruss, USN., reported aboard
14 and 16 May.

All repairs and refit completed by 20 May. Conducted at sea training
May 21-25. Loaded twelve MK 14-3A torpedoes, Four MK 23-1 torpedoes into forward
torpedo room. Loaded eight MK 18-1 torpedoes and four MK 14-3A torpedoes in aft torpedo
room, along with all required provisions 26-30 May. Ready for sea May 31, 1944.

NARRATIVE
------------

May 31
----------

0900 Underway from Brisbane, Australia en route Area BRIAR PATCH
per CTF-72 Operation Order 49-44.

1030 Rendezvoused with escort for transit through minefield.

1131 Trim Dive

1155 Surfaced

1200 Set course for assigned area via Jomard Pass and
Manus Island.

June 2
---------

En route Manus Island. Conducted dive, gunnery, torpedo fire
control, and emergency drills.

June 3
---------

En route Manus Island, conducted drills.

June 4
----------

En rote Manus Island

1400 Transited Vitiaz Strait Northbound.

1411 SJ contact 023 27000 yards (Ship Contact No.1)

1425 Two USN DD's on patrol.

June 5
-----------

1130 Rendezvoused with escort outside Seeadler Harbor, Manus Island.

1300 Moored alongside tender at Seeadler Harbor,Manus Island to top off fuel
and provisions.

1800 Departed Seeadler Harbor, Manus Island for patrol area.

June 6-9
----------

En route patrol area.

June 10
----------

1200 Entered assigned area, BRIAR PATCH.

June 11
----------

Patrol in area.

June 12
-----------

Patrol in area.

1902 SJ contact bearing 359 28400 yards (Ship Contact No.2)

1920 Spotted two DE types on patrol. Avoided.

June 13
-----------

1311 APR-1 detected radar emissions 070.
Likely aircraft. Submerged to avoid.

2130 Surfaced.

June 14
-----------

Patrol in area.

June 15
-----------

0000 Closed in to North End of San Bernadino Strait for close in patrol
per operation order. Enemy forces likely to sortie in response
to FORAGER (landings on Saipan) may exit via the strait.

0624 APR-1 detected radar emissions. Judged to be aircraft, submerged.

0625 Explosions above, not close as CISCO passed 71 ft.. Seems contact was a low ']
flying plane on pre dawn patrol. SD did not detect, not did lookouts.
Given apparent close proximity of contact, APR-1 saved the boat.

0630 Continued on for submerged patrol in North end of San Bernadino Strait, to cover per operation order in case of enemy fleet sortie via the strait in response to FORAGER.

0900 Weather turned foul. Overcast, light fog
winds 29 kts direction 285.

1449 Sound contacts. Many fast and heavy props bearing
000 long range. (Ship Contact No.3)

1453 SJ contacts bearing 355 28200 yds.(Ship Contact No.3)

1505 GENERAL QUARTERS-TORPEDO

1530 Contact Report sent to CTF-72.
Serial 03440615-01
Convoy Sighted.
12-58N 124-23E
Course 045 Speed 20 kts
CVx3,BBx2,CAx2,CLx2, DDx10+

1533 Due to tight screen in a "ring" by DD's, unable to get in close without
detection. Opted for long range shot, torpedoes
set to low power.

(Torpedo Attack No.1)

1538 Tubes 1,2,3,4,5,6 made ready to fire.

1541 Fired tubes 1,2,3,4,5,6 at CV (Believed to be TAIHO). Range 5701 yds.
Torpedoes fired through gap in screen on port side.

1544 Torpedo impact on a CA, amidships.

1545 Three torpedo impacts on TAIHO CV. Large fires visible

1545: One torpedo impact on BB, possible NAGATO class in second column!
31

1546 CV slowed visible list to port, three large fires burning.
Several secondary explosions.

1545: DD's rushing in, pinging. Rigged for depth charge and silent running.
27

1546 Torpedo impact! Torpedo heard hitting unknown vessel as CISCO passed
125 ft. Large explosions heard.

1547 DD above pinging. Splashes

1548 As CISCO passed 400 feet, DC explosions.

1549 Another DD above, more DC explosions,
close, boat shaken.

1552 Massive explosions audible from last bearing of CV TAIHO.

1554 Pinging, DD had solid contact on CISCO at 500 ft.

1555 Large pattern of depth charges, boat severely shaken. Damage reported.
Leaks in forward torpedo room.

1558 More explosions from last bearing of CV.

1601 CISCO at 525 ft. Two DD's made runs.

1602- Large patterns of depth charges, CISCO shaken, more
1603 damage reported. Leaks previously contained in forward torpedo
were now leaking again, causing flooding.

1605 Multiple large explosions from CV bearing followed
by "death noises". CV TAIHO believed sunk.

1610 Flooding controlled, water in compartment, bow slightly heavy, compensated with speed.

1611 A period of near constant pinging from multiple
DD's began. They appeared to be circling CISCO.

1617 Large DC pattern, boat shakes, damage reported. CISCO at 545 ft.
We were surprised by ability of enemy DD's to maintain contact in such
terrible sound conditions.

1618 More depth charges, close. Boat shaken, minor damage.

1620 More DC explosions, not close.

1621 Pinging stopped, lost contact with nearby DD's, believe were listening.

1623 Large explosions from area of CA hit during attack.

1630 Two DD's roared to life one ahead, one aft raced above CISCO
dropping large patterns of depth charges above and along the port side.

1631 Many DC explosions, several close, heavy damage reported.

1632 Flooding in control room, Engine rooms.

1633 Conning tower heavily damaged by DC exploding very close.
Executive Officer LCDR J.B. Butler severely injured (health fell to 15 percent)
At the helm, Chief Signalman G.C. Carter seriously injured (health went to 30 percent)

1634 Conning tower abandoned and sealed off due to damage and flooding.

1634 CISCO sinking, secured silent running, ordered speed to comepsante and full rise on planes
Damage Control Party assigned.

1635 More explosions. DC's, more damage reported in aft torpedo room.

1641 Managed to rise to 450 feet while battling flooding and other damage.

1644 More DC's, close.

1645 Pinging stopped, enemy dropping DC's around
appeared to have lost contact.

1654 Several DD's heard departing area high speed to join the task force
However, soon found out two were left behind to keep CISCO pinned down.

1702 CISCO at 410 feet , fighting to hold depth, battling
flooding. Suddenly DD roared above pinging,
dropping depth charges. One depth charge bounce off of the deck aft of conning
tower and exploded below CISCO, causing severe damage.

Hull damage went to 40 percent.

Every piece of equipment on boat had some level of damage.
Port prop shaft destroyed, aft battery damage at 94 percent.
Conning tower flooded and abandoned. Aft torpedo tubes destroyed.
Hydraulic pumps knocked out. Compressor destroyer. Stern dive planes transmission destroyed.Rudder transmission heavily damaged. No.1 and No.3 diesels disabled, could not repair at sea.With all damage, a battle surface was seriously considered, but some flooding had been contained thanks to valiant efforts of damage control party and some amount of depth control restored, but battery power was draining fast.

1730 After a few more runs, the enemy, for unknown reasons, gave up, two were heard
departing the area at high speed. However, wary one maybe had been left behind to listen.
CISCO continued to hold depth at 360 ft.

1840 Conning tower pumped out.

1930 Battery power nearly exhausted. Close to dark, surfaced and manned guns
in case needed, but no enemy was around. CISCO surfaced into flat calms seas and clear dusk skies.

Most likely reason for the effective enemy attack aside from first rate
destroyers and crews, was after going deep following the attack,
weather topside cleared providing ideal sound conditions for the enemy.

2000 CISCO was in shambles and ineffective. A message was sent to CTF-72
and set course for Manus Island to terminate patrol.

2030 Located large debris field, likely site where carrier TAIHO sunk.

June 16
----------

En route to Manus Island.

With two diesels knocked out along with port prop shaft surface speed was limited to 9.5 kts.

0655 Aircraft spotted bearing 044 8000 yards closing! Dive! Dive!
(Aircraft Contact No.4) SD did not detect aircraft.

0656 As CISCO passed 75 feet, several large explosions rocked the boat
causing severe damage. Notably heavy bulkhead hull damage in aft
torpedo room and flooding.

Hull damage on boat went to 75 percent.
All four stern torpedo tubes destroyed.
Rudder and Stern planes transmissions disabled, again.

Boat leveled at 100 feet. More explosions heard but aircraft did not have
CISCO.

Repairs completed and stayed at 80 feet until night fall.

2030 Surfaced, headed for Manus. All AA gunners would be on standby during daylight hours.

See DAMAGE AND DEFECTS for full damage report.

June 17-27
-------------

En route Manus Island. Did not submerge for remainder of transit due to hull damage.

June 28
------------

0800 Arrived Manus Island. Terminated war patrol.

WEATHER
---------

Weather was normal for the assigned area with mostly yachting weather, punctuated by occasional squalls.

CONTACTS
-----------

Aircraft
--------

No.1
DATE 1944/06/15
TIME 0624
LAT 13-0N
LOG 124-28E
BRG 090*
RNG --
ALT --
SPD --
CRS --
TYPE --
HOW APR-1
REMARK
Explosions after diving, bombed
by unknown aircraft.

No.2
DATE 1944/06/15
TIME 1446
LAT 12-53N
LOG 124-22E
BRG 139
RNG 9500 yds
ALT 1000 ft
SPD 150 kts
CRS 090
TYPE Single engine floatplane. Possibly DAVE.
HOW Visual-Periscope
REMARK
Low flying ASW patrol. Possibly
sweeping ahead of TF exiting San Bernadino Strait.

No.3
DATE 1944/06/16
TIME 1446
LAT 12-04N
LOG 127-0E
BRG 044
RNG 8000 yds
ALT 500 ft
SPD 230 kts
CRS 090
TYPE G4M BETTY
HOW Visual only
REMARK
Bombed by contact, severe damage.

Ships
---------

No.1
DATE 1944/06/04
TIME 1411
LAT 6-1S
LOG 148-12E
BRG 023
RNG 27000 yds
CRS 023
SPD 16 kts
TYPE DD,DD
HOW SJ,Visual
REMARK
Patrol in Vitiaz Strait

No.2
DATE 1944/06/12
TIME 1902
LAT 13-30N
LOG 125-10E
BRG 359
RNG 28400 yds
CRS 240
SPD 16 kts
TYPE DE,DE
HOW SJ,Visual,APR-1
REMARK
Enemy patrol in area.
APR-1 detected radar emissions.

No.3
DATE 1944/06/15
TIME 1449
LAT 13-0N
LOG 124-24E
BRG 000
RNG 15000+ yds(sound) (28200 SJ)
CRS 045
SPD 20 kts
TYPE CV,CV,CV,BB,BB,CA,CA,CL,CL,10+DD
HOW Sound(JP),SJ,Visual
REMARK
Torpedo Attack No.1
CV sunk.
CISCO heavily damaged by depth charge.

ATTACKS
---------------

USS CISCO SS-290 TORPEDO ATTACK NO.1
WAR PATROL NO.5 DATE: June 15, 1944 TIME: 1541
LAT:13-0N LOG:124-24E

------------------------------------------------

TYPE OF ATTACK Submerged-Periscope-Day

SHIPS SUNK
CV TAIHO 35000 tons

Verification:

Observed three torpedo hits on CV. Observed large fires and explosions plus
heavy list to port prior to going be low periscope depth.

Repeated explosions and breaking up noises heard over 30+ minute period from last known
bearing of CV. Large debris field discovered upon surfacing.

SHIPS PROBABLY SUNK
None

SHIPS DAMAGED

BB-Nagato Class 32,700 tons

Verification:

Observed a torpedo impact forward under No.2 turret.
Smoke and fire visible.

CA Takao Class

Verification:

Observed one solid torpedo hit amidships. Large hole visible
below waterline when ship rode heavy seas. Fires and list visible.

SHIPS PROBABLY DAMAGED

One unknown vessel damaged by torpedo hit.

Verification:

After going below to periscope depth to evade enemy destroyers,
a torpedo impact was clearly audible. Target likely a destroyer on opposite side of screen.

TARGET DATA (at firing)
--------------------------------

CLASS CV
NAME TAIHO
TONS 35000
DRAFT 31.2 ft
MAST 150.9 ft
CRS 045
SPD 20 kts
AOB 59 P
RNG 5701 yds
BRG 036
TRUE BRG 167
REMARK
CV sunk

TORPEDO FIRE CONTROL DATA (at firing)
------------------------------------------------

TUBE NO.1
TYPE MK 14-3A
SERIAL NO.44500
EXPLODER MK 6-4
SERIAL NO.30700
GYRO 02 R
COURSE 133
TRACK 94 P
METHOD Single bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Low
DEPTH 12 ft
POA MOT*
ACTUATION Contact
HIT Yes
POI MOT
ERRATIC No
MALFUNCTION No
REMARK
Torpedo hit CA instead of CV

TUBE NO.2
TYPE MK 14-3A
SERIAL NO.44501
EXPLODER MK 6-4
SERIAL NO.30701
GYRO 02 R
COURSE 133
TRACK 94 P
METHOD Single bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Low
DEPTH 12 ft
POA MOT
ACTUATION Contact
HIT Yes
POI MOT
ERRATIC No
MALFUNCTION No
REMARK
Hit on CV Taiho

TUBE NO.3
TYPE MK 14-3A
SERIAL NO.44502
EXPLODER MK 6-4
SERIAL NO.30702
GYRO 02 R
COURSE 133
TRACK 94 P
METHOD Single bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Low
DEPTH 12 ft
POA MOT
ACTUATION Contact
HIT Yes
POI Aft
ERRATIC No
MALFUNCTION No
REMARK
Hit on CV TAIHO

TUBE NO.4
TYPE MK 14-3A
SERIAL NO.44502
EXPLODER MK 6-4
SERIAL NO.30702
GYRO 02 R
COURSE 133
TRACK 94 P
METHOD Single bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Low
DEPTH 12 ft
POA MOT
ACTUATION Contact
HIT Yes
POI Aft
ERRATIC No
MALFUNCTION No
REMARK
Hit on CV TAIHO

TUBE NO.5
TYPE MK 14-3A
SERIAL NO.44504
EXPLODER MK 6-4
SERIAL NO.30704
GYRO 02 R
COURSE 133
TRACK 94 P
METHOD Single bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Low
DEPTH 12 ft
POA MOT*
ACTUATION Contact
HIT Yes
POI Forward under No.2 turret
ERRATIC No
MALFUNCTION No
REMARK
Torpedo missed CV, hit BB.

TUBE NO.6
TYPE MK 14-3A
SERIAL NO.44505
EXPLODER MK 6-4
SERIAL NO.30705
GYRO 02 R
COURSE 133
TRACK 94 P
METHOD Single bearing
SPREAD Divergent
INTERVAL 5 seconds
POWER Low
DEPTH 12 ft
POA MOT
ACTUATION Contact
HIT Yes
POI --
ERRATIC No
MALFUNCTION No
REMARK
Missed CV, later hit unknown target.

OWN SHIP DATA (at firing)
--------------------------

DEPTH 58 ft
COURSE 050
SPEED 3 kts
ANGLE 2-down
SEA STATE Heavy
REMARK

MAJRO DAMAGE AND DEFECTS
---------------------------

CISCO suffered severe damage from depth charge attack and aerial bombing.

Depth Charge Attack No.1
June 15, 1944.
-------------------------

Damage repaired at sea unless otherwise noted.

1. Hull damage-40 percent-Unable to repair at sea.
2. Conning tower bukhead severely damaged. Flooded out, abandoned during attack.
3. Port Prop Saft damaged beyond repair at sea.
4. No.1 Diesel Engine damaged beyond repair at sea.
5. No.3 Diesel Engine damaged beyond repair at sea.
6. Aft Batteries damaged severely. Boat held just a 55 percent charge duration of patrol.
7. SJ Radar Antenna destroyed.
8. SD Radar Antenna damaged.
9. Flooding in all compartments-Water pumped out.
10.Hydraulic pumps damaged.
11. JP sonar disabled. Repaired.
12. Compressor destroyed.
13. Fuel leak
14. Stern dive planes transmission disabled-repaired at sea.
15. Stern tubes disabled-Repaired, later destroyed in air attack.
16. Piping and air line leaks in all compartments.
17. Lightbulbs-Glass fixtures, gaugesall compartments.
18. Compressed air reserve drained to 35 percent. Unable to replenish
due to loss of compressor.

Aerial Attack
June 16, 1944
----------------

Several depth charges/bombs dropped by plane at dawn
as CISCO passed 75 ft. Exploded below stern.

1.Hull damage up to 80 percent.
2. Bulkhead damage stern torpedo. Flooding. Pumped out 3 ft of water.
3. Stern tubes destroyed-Unable to repair at sea.
4. Stern planes transmission knocked out.
5. Rudder transmission knocked out. Repaired but boats turning remained sluggish rest of patrol.

Upon arriving at Manus Island, CISCO was ruled a total constructive loss and unfit for operations, including submerging. Thus, CISCO has made her final dive.
After voyage repairs, CISCO was routed to Mare Island, CA to await further disposition.

Bubblehead1980 · 06-08-22, 03:54 AM

Flower Corvette coming in to ram during night surface attack!

Bubblehead1980 · 06-09-22, 01:13 PM

Went over to Dark Waters U Boat mod for SH 4. Have to say, had a blast on first patrol. Read a few reports available from German Skippers and tried to write this in their style. Still learning lol

Dark Waters
100 difficulty, contacts on, cams on.

U-48 Type VIIB U Boat
2nd Flotilla, Wilhelmshaven.

Used the name Xavier Marche (familiar with the book or movie Fatherland? The character was a U Boat commander during the war)

Kriegstagebuch of the Kommandanten of "U-48"
for the period from 03.09-07.10.1939.

Kommandant: Oberleutenant zur See Marche

03.09.39
------------

15.00 Departed Wilhelmshaven for assigned patrol grid.
Skies clear. Sea State:2 Winds 11 kts direction 000

22.00 Test Dive. Depth below keel 34 meters.
Dive time: 30 seconds.

2201 Leveled off at 17 meters.

2220 Surfaced. Set course for Grid AM 01

04.09.39
------------

Transit to area.

Weather Clear, Cool. Sea State:3

05.09.39
-------------

Weather Clear, Cool. Sea State:3

16.40 ALARM drill. Dive time 24 seconds.

1655 Surfaced.

06.09.39-10.09.39
-------------------

Transit to assigned grid. Uneventful.

Sea State 3-4. Skies mostly clear.

11.09.39
-----------

00.00 Entered assigned patrol Grid AM01

12.09.39
-----------

Uneventful. Sea State: 4

13.09.39
-----------

Uneventful. Sea State: 4

14.09.39
-----------

Uneventful. Sea State: 5

15.09.39
-----------

Uneventful. Sea State: 2

16.09.39
-----------

Patrol in grid. Sea State:1

01.31 Received orders to converge on reported convoy
in Grid BE 3350. Set course at best speed.

12.14 Spotted vessel bearing 026 20km. Set pursuit course for
attack.

1252 Target identified as Steam Trawler 330 tons.

1253 Prepared for Gun Action.

1319 Opened fire with deck gun.

1329 Ceased fire. Vessel burning, adrift.

1341 Trawler sunk Grid AM 81. 330 tons.

1345 Secured and set course for convoy intercept.

1700 Determined unable to reach convoy. Convoy reported already
attacked. Returned to previous area.

17.09.39
-----------

Uneventful. Sea State: 1

18.09.39
-----------

Uneventful. Sea State:2

19.09.39
-----------

Uneventful. Sea State:0

20.09.39
-----------

Uneventful. Sea State: 1

21.09.39
-----------

Uneventful. Sea State:0

22.09.39
-----------

Sea State:0

06.24 Received report of Large Enemy Convoy
Grid AM 76 Course NNW 7 kts.

Set course for intercept. Estimated
time to contact 12 hours.

17.30 Submerged for sound sweep.

17.32 Sound contacts long range 017.

17.35 Surfaced for intercept.

17,45 Spotted convoy bearing 341 18 km.
Action Stations!

17.48 Submerged for attack.

18.38 Observation. Convoy zigged to Northeast.

UBoat now off port side of convoy. Closing for attack.

18.39 At 70 meters as Destroyer raced 1200 meters across
bow at high speed to resume station. Did not detect boat.

18.45 Observation. Trailing convoy to port about 1500 meters
spotted a battleship of Queen Elizabeth Class. Began
tracking for attack.

19.01 Fired tubes 1,2,3,4 at Battleship. Range 1200 meters.

19.02 Torpedo No.1 exploded prematurely, followed by Torpedo No.2 and No.3

Battleship alerted, made hard evasive turn towards U-48,
likely causing fourth torpedo to miss ahead.
U-48 was already into swing to bring stern tube to
firing position. Lowered cope as battleship secondary batteries
were opening fire.

19.06 Observation: Battleship bearing 180 AOB 175 900 meters.

19.06: Fired Tube No.5
15

19.06: Torpedo impact! Torpedo hit stern of Battleship. Large
56 fired and explosion visible.

19.07 Began torpedo reload for follow up attack.

19.10 Battleship slowed, fire was raging, slight list to starboard by stern.

19.11 Spotted destroyer closing bearing 162 4000 meters.

19.13 Pinging. Stopped Reload. Ordered Silent Routine
and Rig for Depth Charge.

19.15 Enemy above. Splashes! Boat depth 90 meters.

19.16 Explosions-Above. One at level, boat shaken. No damage.

19.20 Depth 120 meters.

19.24 Splashes above.

19.25 Many detonations, above. Enemy charges set too shallow.

19.37 Enemy bearing 032, closing fast, short range. Closing for attack.

19.40 At 140 meters. Explosions above. Charges too shallow.

19.41 Rigged for Red. Depth 150 meters. Pinging, enemy
searching.

19.46 Very large depth charge pattern exploded above.

19.51 Depth:166 meters.

19.58 175 meters.

20.01 Lost contact with one enemy destroyer, believed to be
"sleeping", listening. Other departed area high speed.

20.30 Enemy engines roared to life on sound gear
bearing 200 short range. Pinging began.

20.31 Enemy above, splashes. Boat depth 175 meters.

20.32 Many depth charge explosions, above. One was closer
than rest. Small leaks sprung in control room, quickly
stopped. (See Damage Section)

20.34 Enemy departed area high speed.

21.03 Secured from Action Stations. Maintained Silent Routine.

21.40 Sound contact/ bearing 270 medium range. Enemy engines
starting up.

22.46 25 meters depth.

22.50 Periscope depth. All clear. End Silent Routine.
Prepared to surface.

22.54 Surfaced. Set course for pursuit and follow up attacks.

23.51 Spotted destroyer bearing 005 4500 meters. Avoided.

23.09.39
-----------

00.01 Spotted damaged Battleship, large smoke plume visible on horizon bearing 005 6000 meters.
Called Action stations.

00.06 Moved for attack position while torpedo reload completed.

00.07 A destroyer was spotted, patrolling area near damaged battleship
which appeared dead in water or adrift.

00.11 Flashes from battleship main guns and secondary guns. Appears we were
detected. Splashes in distance. Turned away, did not submerge.

00.12 Enemy destroyer spotted closing position at high speed.

00.16 Fired Tube No.5 "Down the Throat" shot at DD.

00.18 DD slowed, evaded torpedo. This period of slowed down
permitted us to escape.

0030 Convoy changed course to East.

01.19 Submerged to listen for Battleship..

01.30 Surfaced.

01.54 Spotted battleship bearing 143 10 km.
Continued to shadow convoy, recharge batteries, waited for moon
to set for attack.

02.23 Moon set. Action Stations called.

02.27 Flooded down to decks awash.

02.49 Submerged to periscope depth. 6500 meters from Battleship.

03.19 Fired salvo...Tubes 1,2,3,4 Range 1000 meters.

03.20 During torpedo run, scope spotted by Battleship, fired at scope.

03.20: Four torpedo impacts on battleship.
25

03.21 Large explosions and fires.

03.22 Battleship began listing to port.

03.23 DD spotted, bearing 040 2500 meters, closing high speed.
Pinging. Ordered 150 meters. Rigged for Silent Routine and
Depth Charge!

03.25 Enemy above. Splashes

03.26 Explosions, close, boat shaken.

03.28 Second enemy destroyer arrived on scene, pinging.

03.30 Splashes, explosions, above. One close. Boat shaken.
Minor damage. Depth 115 meters.(See Damage)

03.31 Massive series of explosions from bearing
of battleships.

03.35 Queen Elizabeth Class Battleship sunk. Sounds of ship breaking up
with many explosions.

03.37 Pinging. Enemy close, passed above with splashes.
Many depth charges. None close.

03.55 150 meters depth.

03.58 Pinging. More depth charges, not close.

04.08 160 meters depth.

04.33 Many depth charge explosions astern, no close.
Boat depth 170 meters. Leaks stopped.

04.47 More pinging, More charges.

04.54 Depth 175 meters.

05.00 Enemy hunting in area.

05.09 Depth charges, not close.

05.25 Lost sound contact with enemy.

06.03 Secured from Action Stations. Maintained Silent Routine.

09.00 Periscope depth. All clear. Secured Silent Routine.

09.20 60 Meters for torpedo reload.

18.30 Surfaced. Sea State:0

24.09.39
----------

Sea State: 0 Clouds light.

04.18 Trawler spotted bearing 269 9 km.
Turned to intercept.

04.20 Action Stations! Prepared for Gun Action.

04.30 Opened fire with deck gun. Range 1200 meters.

04.36 Trawler turned to ram! Ordered ahead flank, continued firing.

04.38 Trawler burning, went dead in water.

04.42 Steam Trawler. British flagged. 330 tons sunk. Grdi AM 18

04.45 Secured from action stations. Resumed patrol in Western Approaches.

26.09.39
----------

Uneventful. Sea State:1

27.09.39
----------

Uneventful. Sea State:1

28.09.39
----------

Uneventful. Sea State:5

29.09.39
----------

Sea State: 5

00.29 During routine submergence for sound check,
detected screw noises bearing 355-000. Ordered to close.

00.35 Surfaced to close contact.

00.58 Convoy sighted! Bearing 359 8200 meters.
Course 342 Speed 8 knots. Grid AM 73.
Contact Report Sent.

01.53 Targeted 10500 ton tanker in center column.

02.05 Fired tubed 1,2,3 at tanker. All bow torpedoes expended.

02.06 Torpedoes 1,2,3 prematurely detonated in succession, roughly 5 seconds apart.

02.07 Ordered speed to work closer to tanker fire final torpedo
from stern tube.

02.25 Inside convoy 3500 meters from large tanker.

02.34 Fired tube 6. Range to target 3000 meters!. All torpedoes expended.

02.35 Torpedo prematurely exploded after broaching in heavy seas.

02.36 Merchant vessel bearing 260 1400 meters closing fast!
Vessel attempted to ram. Ordered flank speed and evaded ramming.

02.42 Enemy Destroyer astern 4000 meters searching.

03.00 Shadowing convoy. Secured Action Stations. Sent updated
contact report.

03.10 Received reply to second contact report. Ordered to break contact and return
to base.

03.15 Broke contact, set course for Wilhelmshaven.

30.09.39
-----------

Transit to base. Sea State:5

01.10.39
-----------

Transit to base. Sea State:5

02.10.39.
------------

Transit to base. Sea State:0

03.10.39.
------------

Transit to base. Sea State:1

04.10.39.
------------

Transit to base. Sea State:3

05.10.39.
------------

Transit to base. Sea State:3

06.10.39.
------------

Transit to base. Sea State:1

07.10.39.
------------

Transit to base. Sea State:1

09.00 Entered Wilhelmshaven.

Ships Hit
-----------------

1. Battleship-Queen Elizabeth Class 36450 tons. Possibly HMS Warspite.
Sunk in Grid AM 49 at 03.35 23.09.39 by torpedo.

2. Steam Trawler 330 tons
Sunk in Grid AM 81 16.09.39 by gunfire.

3. Steam Trawler 330 tons sunk in Grid AM 18 25.09.39
by gunfire.

Damage
----------

No serious damage incurred on patrol. All damage repaired at sea.

1. Leaks sprung in Bow Torpedo Room and Control room
after depth charge attacks.

2. Hydraulic Pump damaged.

3. Batteries damaged.

4. High Pressure Air lines leaking.

5. Lights shattered.

6. Radio Antenna damaged by machine gun fire.

7.Main Deck Planking damaged by light machine gun fire.

Weather, Seas, Tides, Sun, and Moon Data
------------------------------------------

Skies were mostly clear or had light cloud cover for most of patrol.
Sea state varied between 0 and 5, with average state of 4.

Tides were normal for Western Approaches.

Average Sunrise time was 07.30-08.15.

Average Sunset time was 19.30-20.20

Average Moonrise time was 20.00-21.00

Average Moonset was 04.00-05.00

Nights were dominated by full or half moons.

Navigational and Travel Data
--------------------------------

No Aides to Navigation were spotted. Buoys
and aides appeared to have been removed in order to not aid our forces.

Route followed was through North Sea, North of England to
assigned areas in Western approaches. Similar route was followed for transit home.Average transit speed was 9 kts. 11,550 kilometers were traveled during patrol, including
transit to and from base and in patrol grids.

Attacks
-------------

U-48 War Patrol One
Torpedo Attack No.1
September 22, 1930
19.01
Grid AM 8158
Sea State: 1
Moon-None

Attack No.1
Target Data
______________

Description:

Large convoy of 15+ merchant vessels. Escorted by Three destroyers,
and one Battleship. Original set up was on center column of tankers from inside convoy,
but a zig to the North East put U-48 outside on port side. Shortly after the Battleship
was observed and thus selected as target.

Result of attack.

Three torpedoes malfunctioned, prematurely detonated. One missed
ahead due to evasive movement by alerted target.

Verification-

Observed visually and heard three premature explosions.

Attack No.1
Target and Torpedo Data (At Firing)
______________________________________

Target No.1
--------------

Type Battleship
Class/Name Queen Elizabeth Class. Possibly HMS Warspite.
Tons 36,450
Draft 8.9 M
Mast 48.0 M
Length 195 M
Course 346
Speed 7 kts
Range 1200 M
AOB 80 P
Bearing 010
Note
Convoy escort.

Torpedo Data (At Firing)
--------------
Tube No. 1
Type TII G7e
Serial No.2551
Pistol Magnetic
Gyro 0
Course 081
Track 355 P
Depth 9.5 meters
Power Normal
Spread 0
Salvo Yes
Aim Point-Midships
Hit No
Impact Point-None
Note
Premature detonation.

Tube No. 2
Type TII G7e
Serial No.2552
Pistol Magnetic
Gyro 0
Course 081
Track 355 P
Depth 9.5 meters
Power Normal
Spread 0
Salvo Yes
Aim Point-Midships
Hit No
Impact Point-None
Note
Premature detonation.

Tube No. 3
Type TII G7e
Serial No.2553
Pistol Magnetic
Gyro 0
Course 081
Track 355 P
Depth 9.5 meters
Power Normal
Spread 2 degrees Starboard of center
Salvo Yes
Aim Point-Midships
Hit No
Impact Point-None
Note
Premature detonation.

Tube No. 4
Type TII G7e
Serial No.2554
Pistol Magnetic
Gyro 0
Course 081
Track 355 P
Depth 9.5 meters
Power Normal
Spread 2 degrees Port of center
Salvo Yes
Aim Point-Midships
Hit No
Impact Point-None
Note
Missed ahead when target conducted evasive movement after
alarted by premature detonations.

U-Boat Data
-------------

Depth: 13 Meters
Course 140
Speed 2 kts
Angle-0-Up-Down

----------------------------------------------------------------------------------

U-48 War Patrol One
Torpedo Attack No.2
September 22, 1930
19.06
Grid AM 8158
Sea State: 1
Moon-None

Attack No.2
Target Data
______________

Description:

Follow up to Attack No.1 on battleship with stern tube.

Result of attack.

One torpedo impact in stern of target. Large explosion
and burning fire visible. Likely steering and propulsion damage to target.

Verification-

Observed via periscope one hit on stern, clearly audible to all as well.

Attack No.2
Target and Torpedo Data (At Firing)
______________________________________

Target No.1
--------------

Type Battleship
Class/Name Queen Elizabeth Class.Possibly HMS Warspite.
Tons 36,450
Draft 8.9 M
Mast 48.0 M
Length 195 M
Course 340
Speed 4 kts
Range 800 M
AOB 80 P
Bearing 010
Note
Target zigging.

Torpedo Data (At Firing)
--------------

Tube No. 5
Type TII G7e
Serial No.2565
Pistol Magnetic
Gyro 180
Course 091
Track 177 P
Depth 6 meters
Power Normal
Spread 0
Salvo No
Aim Point-Stern
Hit Yes
Impact Point- Stern
Note
Fire visible after hit, list port to stern. Possible
steering/propulsion damage to target.

U-Boat Data
-------------

Depth: 13 Meters
Course 261
Speed 2 kts
Angle- Up-Down-O

__________________________________________________ ________________
U-48 War Patrol One
Torpedo Attack No.3
September 23, 1939
00.12
Grid AM 8158
Sea State: 0
Moon-None

Attack No.3
Target Data
______________

Description:

Fired torpedo "down the throat" from stern tube at pursuing destroyer.

Result of attack.

Torpedo missed.

Attack No.3
Target and Torpedo Data (At Firing)
______________________________________

Target No.1
--------------

Type Destroyer
Class/Name Unidentified, British
Tons 1500 tons
Draft 5 M
Mast
Length
Course
Speed 30+ kt
Range 3500 M
AOB 0
Bearing 180
Note
Missed, target slowed when
observed wake in moonlight.

Torpedo Data (At Firing)
--------------

Tube No. 5
Type TI (G7a)
Serial No.11990
Pistol Magnetic
Gyro 180
Course 200
Track 180
Depth 3 meters
Power High
Spread 0
Salvo No
Aim Point-Bow
Hit No
Impact Point -None
Note
"Down the Throat" shot on pursuing destroyer.

Missed, but visible wake caused destroyer to evade. This slow down
permitted U-48's escape.

U-Boat Data
-------------

Depth: Surfaced
Course 005
Speed 18 kts
Angle-1-down-bow

__________________________________________________ ________

U-48 War Patrol One
Torpedo Attack No.4
September 23, 1930
03.19
Grid AM 49
Sea State:0
Moon-None

Attack No.4
Target Data
______________

Description:

Follow up attack on Battleship damaged by torpedo in Attack No.1

Result of attack.

Queen Elizabeth Class Battleship sunk.
36,450 tons. Grid AM 49.

Verification-

Observed four torpedoes hit target. Large explosions and fires,
in addition to existing damage from previous torpedo hit in Attack No.2.

Target began to list. Haerd many explosions and breaking up noises from target bearing.
Very close range.

Attack No.4
Target and Torpedo Data (At Firing)
______________________________________

Target No.1
--------------

Type Battleship
Class/Name Queen Elizabeth Class.Possibly HMS Warspite.
Tons 36,450
Draft 8.9 M
Mast 48.0 M
Length 195 M
Course 050
Speed 7 kts
Range 1000 meters
AOB 85 P
Bearing 012
Note
Damaged in previous attack.

Torpedo Data (At Firing)
--------------

Tube No.1
Type TI G7a
Serial No.2580
Pistol Magnetic
Gyro 0
Course 135
Track 15 P
Depth 6 meters
Power High
Spread 2 degrees
Salvo Yes
Aim Point- Midships
Hit Yes
Impact Point- Midships
Note

Tube No.2
Type TI G7a
Serial No.2581
Pistol Magnetic
Gyro 0
Course 135
Track 15 P
Depth 6 meters
Power High
Spread 2 degrees
Salvo Yes
Aim Point- Midships
Hit Yes
Impact Point- Midships
Note

Tube No.3
Type TI G7a
Serial No.2582
Pistol Magnetic
Gyro 0
Course 135
Track 15 P
Depth 6 meters
Power High
Spread 2 degrees
Salvo Yes
Aim Point- 2 degrees port of midships.
Hit Yes
Impact Point- Aft
Note

Tube No.4
Type TI G7a
Serial No.2583
Pistol Magnetic
Gyro 0
Course 135
Track 15 P
Depth 6 meters
Power High
Spread 2 degrees
Salvo Yes
Aim Point- Port 2 degrees port of midships.
Hit Yes
Impact Point- stern
Note

U-Boat Data
-------------

Depth: 13 Meters
Course 140
Speed 2 kts
Angle-0-up/down

__________________________________________________ ______________________

U-48 War Patrol One
Torpedo Attack No.5
September 29, 1939
02.05
Grid AM 73
Sea State: 5
Moon: Full

Attack No.5
Target Data
______________

Description:

Attack on large convoy in heavy seas and full moon. Fired on large
tanker in center column from 2000 meters outside convoy.

Result of attack-

Torpedoes prematurely detonated.

Verification-

Observed torpedoes explode one minute after firing.

Attack No.5
Target and Torpedo Data (At Firing)
______________________________________

Target No.1
--------------

Type Tanker
Class/Name Aft stack Tanker, Large. Name Unknown. British flagged.
Tons 10500
Draft 8.2 M
Mast 22.5 M
Length 154 M
Course 342
Speed 6 kts
Range 5900 M
AOB 70 P
Bearing 025
Note

Torpedo Data (At Firing)
--------------

Tube No.1
Type TI G7a
Serial No.2586
Pistol Magnetic
Gyro 15 L
Course 085
Track 10 S
Depth 5.5 M
Power Medium
Spread Divergent
Salvo No
Aim Point Amidships
Hit No
Impact Point- None
Note
Torpedo prematurely detonated.

Tube No.2
Type TI G7a
Serial No.2587
Pistol Magnetic
Gyro 15 L
Course 085
Track 10 S
Depth 5.5 M
Power Medium
Spread Divergent
Salvo No
Aim Point Amidships
Hit No
Impact Point- None
Note
Torpedo prematurely detonated.

Tube No.3
Type TI G7a
Serial No.2588
Pistol Magnetic
Gyro 15 L
Course 085
Track 10 S
Depth 5.5 M
Power Medium
Spread Divergent
Salvo No
Aim Point Amidships
Hit No
Impact Point- None
Note
Torpedo prematurely detonated.

U-Boat Data
-------------

Depth: Surfaced
Course 085
Speed 2 kts
Angle 2-Down-Bow

__________________________________________________ ___

U-48 War Patrol One
Torpedo Attack No.6
September 29, 1939
02.34
Grid AM 73
Sea State: 5
Moon: Full

Attack No.6
Target Data
______________

Description:

Second attack on 10500 ton tanker.

Result of attack-

Torpedo broached and prematurely detonated.

Verification-

Observed torpedo prematurely detonate after broaching.

Attack No.6
Target and Torpedo Data (At Firing)
______________________________________

Target No.1
--------------

Type Tanker
Class/Name Aft stack Tanker, Large. Name Unknown. British flagged.
Tons 10500
Draft 8.2 M
Mast 22.5 M
Length 154 M
Course 342
Speed 6 kts
Range 3000 M
AOB 80 P
Bearing 170
Note

Torpedo Data (At Firing)
--------------

Tube No.6
Type TI G7a
Serial No.2589
Pistol Magnetic
Gyro 11 R
Course 091
Track 13 S
Depth 5.5 M
Power Medium
Spread 0
Salvo No
Aim Point Midships
Hit No
Impact Point- None
Note
Torpedo prematurely detonated en route to target.

U-Boat Data
-------------

Depth: Surfaced
Course 260
Speed 4 kts
Angle 2-Down-Stern

Gunnery Attacks

No.1
16.09.39

Expended 14 rounds 8.8 cm High Explosive Rounds
for 12 hits. 330 ton steam trawler sunk.

No.2
25.09.39

Expended 12 High Explosive Rounds and four illumination rounds
for 12 HE hits. 330 ton steam trawler sunk.

100 2 cm AP rounds from 2 cm machine gun expended on target for 50+ hits

------------------------------------------

Enemy Anti-Submarine Countermeasures
--------------------------------------

British appear to have adapted convoy system as two large convoys
were encountered in area. Each convoy was well protected, the first
included the battleship sunk by torpedo and three destroyers.

Enemy "ASDIC" seemed adequate to detect and track the boat
up to around 100-140 meters. After reaching this depth the enemy
appeared to have trouble tracking. Enemy depth charge attacks were
persistent.

Enemy depth charges appeared to produce large and powerful explosions
but in nearly all cases they were set too shallow. This was likely due
to believing our U-Boat could not operate beyond certain depths
along with their ASDIC's trouble in tracking beyond certain depths.

Enemy merchant vessels encountered were not armed. However, these vessels displayed a penchant for attempting to ram our U-Boat as
this occurred, twice in two separate attacks. First, in a gunnery attack
on a 330 ton steam trawler, after several gun hits, the trawler turned as best speed to ram.

On the next occasion, after firing final torpedo from inside convoy,
a large merchant vessel of 5000 tons increased speed and turned towards
our U-Boat to ram. Increase to flank speed and application of rudder got us
out of danger but was challenging given the heavy sea state and close range
of vessel.

Torpedoes
------------

All fourteen torpedoes aboard were expended.

Eight torpedoes prematurely detonated
One torpedo missed target, alerted by premature detonations.

Five torpedoes hit target as aimed.

Remark
--------

Repeated torpedo failures prevented further success and waste of torpedoes.
A valuable 10500 ton enemy tanker was saved only by torpedo malfunctions.
However, crew and boat persevered in sinking a valuable enemy warship.

Bubblehead1980 · 06-09-22, 01:43 PM

Merchant trying to ram me while I was inside convoy on surface. Range about 1200 meters. In the heavy seas, I was just barely able to get out of the way.

Bubblehead1980 · 06-11-22, 10:30 AM

Kriegstagebuch of the Kommandanten of "U-48"
for the period from 11.11.1939-20.01.1940.

Kommandant: Oberleutenant zur See Marche

11.11.39 09.45 Departed Wilhelmshaven for patrol.
----------
17.40 Test Dive.

Sea State: 1

12.11.39 Transit to Area.
---------- Sea State: 0

13.11.39 Transit to area. Uneventful.
---------- Sea State: 0

14.11.39 Transit to area. Uneventful.
---------- Sea State: 1

15.11.39 Transit to area. Uneventful.
---------- Sea State: 2

16.11.39 Transit to area. Uneventful.
---------- Sea State: 2

17.11.39 Transit to area. Uneventful.
---------- Sea State: 2

18.11.39 00.00 Arrived in assigned Grid AM 52.
---------- Sea State: 2

19.11.39 Patrol in area.
---------- Sea State: 2

04.32 Ship spotted bearing 039 9000 meters
Turned to intercept.

04.35 Spotted second contact. Both identified
as 330 ton steam trawlers.
Decided to shadow until dawn for gun attack.

08.10 Submerged to inspect visually at dawn prior
to gun attack.

08.30 Surfaced for gun action.

08.32 Opened fire on trawlers from 1500 meters with
High Explosive rounds.

08.42 Steam Trawler No.1 sunk by gunfire. Grid AM 52

08.45 Steam Trawler No.2 sunk by gunfire. Grid AM 52

08.47 Secured from action stations. Resumed patrol.

20.11.39 Patrol in Area.Unventful.
----------- Sea State: 4

21.11.39 Patrol in Area.Unventful.
----------- Sea State: 4

22.11.39
----------- Sea State: 4

00.00 Received orders to patrol Grid AE 695.
Set course for new grid.

23.11.39 Transit to new grid..Unventful.
----------- Sea State: 4

24.11.39 Patrol in new grid AE 695.Unventful.
----------- Sea State: 5

25.11.39 Patrol in new grid AE 695.Unventful.
----------- Sea State: 5

26.11.39 Patrol in new grid AE 695.Unventful.
----------- Sea State: 5

27.11.39 Transit to original grid.Unventful.
----------- Sea State: 5

28.11.39 Transit to grid.Unventful.
----------- Sea State: 4

29.11.39 Patrol in grid.Unventful.
----------- Sea State: 4

30.11.39 Patrol in grid.Unventful.
----------- Sea State: 0

01.12.39 Patrol in grid.Unventful.
----------- Sea State: 0

02.12.39 Patrol in grid.Unventful.
----------- Sea State: 0

03.12.39 Patrol in grid.Unventful.
----------- Sea State: 0

04.12.39 Patrol in grid.Unventful.
----------- Sea State: 0

05.12.39 Patrol in grid.Unventful.
----------- Sea State: 0

06.12.39 Patrol in grid.
----------- Sea State: 0

13.59 Aircraft Spotted bearing 163!
Alarm! Dive! (Aircraft No.1)

14.00 Leveled at 45 meters.

18.20 Surfaced.

07.12.39 Patrol in grid.
----------- Sea State: 2

15.41 Aircraft spotted bearing 200!
Alarm! Dive! (Aircraft No.2)

15.42 Passed 40 meters, several large explosions.
No damage.

18.50 Surfaced.

08.12.39 Patrol in grid.Unventful.
----------- Sea State: 2

09.12.39 Patrol in grid.Unventful.
----------- Sea State: 2

10.12.39 Patrol in grid.Unventful.
----------- Sea State: 4

11.12.39 Patrol in grid.Unventful.
----------- Sea State: 4

12.12.39 Patrol in grid.Unventful.
----------- Sea State: 4

13.12.39 Patrol in grid AM 619 off Barra Head.
----------- Sea State: 4

08.18 Submerged for patrol.

18.45 Surfaced.

14.12.39 Patrol.
----------- Sea State: 4

10.40 During dive for sound sweep, detected
screws bearing 010 long range. Began
to close bearing.

11.04 Periscope observation. Spotted smoke bearing 000
15 km. Set intercept course.

11.30 Action stations!

11.55 Fired Tube No.1 Torpedo missed for uknown cause.

11.57 Fired Tube No.2 Missed, target slowed.

11.59 Fired Tube No.3 Missed, unknown cause.

12.01 Fired Tube No.4 Missed unknown cause.

12.08 Reloaded Tube No.1. Fired T1

12.09 Torpedo impact!

12.19 Fired Tube No.2

12.20 Torpedo impact!

12.21 Vessel crippled, burning, listing.

12.28 Massive boiler explosions.
Vessel split into.

12.31 4,200 ton cargo vessel, British flagged
sunk Grid AM 53.

12.33 Distant sound contact heard bearing 353.
Surfaced, set course to intercept.

12.39 Spotted two vessels, unidentified.
Closing. Returned to Action Stations.

12.45 Four contacts, possible warships. Course 126 Speed 11 kts.
Contact Report sent to BdU.

13.00 Orders to pursue and attack.

13.26 Targets made zig to East.Heading right for
our position.

13.27 Submerged for attack.

13.40 Contact is four ASW type patrol craft/armed trawlers,
closing fast!

13.41 Rigged for Depth Charge and Silent Routine.

13.45 Ordered 45 meters depth.Bottom is at 75 meters.

14.00 Enemy passed above. Believeheavy seas
helped to thwart their search efforts.

14.30 Secured Action Stations. Maintained Silent Routine.

19.00 Surfaced.

14.12.39 Patrol.
----------- Sea State: 4

15.12.39 Patrol.
----------- Sea State: 3

16.12.39 Patrol.Unventful.
----------- Sea State: 3

17.12.39 Patrol.Unventful.
----------- Sea State:0

18.12.39 Patrol.Unventful.
----------- Sea State:0

19.12.39 Patrol.Unventful.
----------- Sea State:0

20.12.39 Patrol area. Uneventful.
---------- Sea State: 0

21.12.39 Patrol area. Uneventful.
---------- Sea State: 0

22.12.39 Patrol area.
---------- Sea State: 0

06.05 Received contact report on
Large Convoy on Easterly Course
at 7 knos. Plotted intercept
set course at best speed.

09.12 Submerged for sound search.

09.14 Sound contact distant bearing 031.

09.16 Surfaced to close contact.

10.12 Convoy sighted Grid AM 5654
Course 090 Speed 7 kts
Contact Report sent.

10.13 Action Stations!

11.34 Fired tube 6 at 6000 ton merchant.

11.36 Torpedo missed. Turned for bow shot.

11.41 Fired tubes 1,2,3 spread at center column.

11.47 Two torpedoes impacted 7470 ton merchant in next column.
Ship exploded and sunk in three minutes.

11.53 Torpedo reload completed. Tube 1 and Tube 6

11.54 Periscope raised. Observed large merchant 400 meters bearing
090 turned to ram our scope. Alarm! 25 meters!

11.56 Pinging began.

11.58 Periscope depth. Destroyer 1800 meters closing fast
bearing 120. Rigged for depth charge and silent routine.

12.00 Destroyer above, splashes.

12.00: At 100 meters. Depth charge explosions, above.
44

12.26 Enemy continues to set charges too shallow.
Boat depth 176 meters.

13.30 Temporary loss of depth control after depth charges above
Descended from 176 meters to 211 meters before regaining control.

13.38 169 meters. Enemy appeared to have lost contact at 200 meters depth.

20.00 Surfaced after dark. Set pursuit course of convoy
while recharging batteries and moving external stern torpedo
into torpedo room.

23.12.39 Pursuit of convoy.
---------- Sea State: 0

14.00 Reversed course as believed likely ahead of convoy if zigged.

16.45 Submerged for sound sweep.

16.48 Sound contact, many screws, very distant at bearing
340-350.

16.50 Surfaced to close contacts.

17.14 Spotted smoke bearing 010 logn range!

17.34 Contact is large vessel moving at high speed course 100

17.40 Unable to overtake target. Chose to fire from astern of target.

17.48 Fired torpedo Tube No.1. All bow torpedoes expended.

17.50 T1 G7a Torpedo missed, cause unknown.

17.53 Opened fire with deck gun.

18.00 Vessel dead in water, sinking.

18.05 5975 ton British merchant vessel sunk by gunfire
Grid AM 53

18.10 Secured Action Stations. Departed area.

24.12.39 Patrol in Grid AM 378 West of Hirta Island.
---------- Sea State: 0

21.04 Aircraft 180 very short range !
Alarm! Dive! Unidentified single engine
aircraft appeared out of darkness and
dropped several bombs/depth charges.

Damage reported (see below).

21.05 Boat in uncontrolled dive, heavy forward due to flooding.

Emergency procedures to stop descent, but hit bottom
at 120 meters. Damage reported (see below).

Damage from bombs/depth charges:

1. Flooding in bow torpedo compartment.

2. Bow Dive planes Transmission disabled.

Damage from impact with sea floor:

1. Fore batteries severely damaged.
Capacity reduced to 40 percent.
2. Additional flooding in bow torpedo room.

3. Hydraulic Pump

4. Trim Pump

5. Clean Fuel Oil Tank

6. High Pressure Air Compressor

Injuries:

Mostly minor. Matrosengefeiter M.H. Ritter seriously injured
as was on watch topside when bombing occurred.

21.10 Ballast tanks blow with motors backing at full.

21.25 Surfaced. Repairs continued.

25.12.39 Continued repairs.
---------- Sea State: 5
Heavy Rains, Heavy Fog. Winds 30 kts, direction 340.

02.50 Batteries repaired.

04.45 Batteries recharged to 100 percent capacity.

26.12.39 Patrol.
---------- Sea State: 5
Heavy Rains, Heavy Fog. Winds 30 kts, direction 340.

27.12.39 Patrol.
---------- Sea State: 5
Heavy Rains, Heavy Fog. Winds 30 kts, direction 340.

28.12.39 Patrol.
---------- Sea State: 5
Heavy Rains, Heavy Fog. Winds 30 kts, direction 340.

29.12.39 Patrol.Storms cleared, heavy seas remained.
---------- Sea State: 5
Clouds partial with light fog.Winds 27 kts, direction 353.

29.12.39 Patrol. Position Grid AM 52.
---------- Sea State: 5
Clouds partial with light fog.Winds 27 kts, direction 353.

30.12.39 Patrol.
---------- Sea State: 5
Clouds partial with light fog.Winds 27 kts, direction 353.

31.12.39 Patrol.
---------- Sea State: 5
Clouds partial with light fog.Winds 27 kts, direction 353.

01.01.40 Patrol.
---------- Sea State: 5
Clouds partial with light fog.Winds 25 kts, direction 353.

02.01.40 Patrol Grid AM 55. Winds and seas calmed in area.
---------- Sea State: 0
Clouds partial with light fog.Winds 2 kts, direction 037.

03.01.40 Patrol.
---------- Sea State: 0
Clouds partial with light fog.Winds 2 kts, direction 037.

00.00 Ordered to Grid AM 35. Set course 045.

04.01.40 Patrol.
---------- Sea State: 0
Clouds partial with light fog.Winds 2 kts, direction 037.

05.01.40 Patrol in AM 35
---------- Sea State: 0
Clouds partial with light fog.Winds 1 kt, direction 037.

06.01.40 Patrol.
---------- Sea State: 5

07.01.40 Patrol.
---------- Sea State: 5

08.01.40 Patrol.
---------- Sea State: 5

09.01.40 Patrol.
---------- Sea State: 5

10.01.40 Patrol.
---------- Sea State: 0

11.01.40 Patrol. Day 60 at sea.
---------- Sea State: 0

12.01.40 Set course for Wilhelmshaven.
---------- Sea State: 0

13.01.40 Transit to Wilhelmshaven. East of Shetland Islands.
---------- Sea State: 2

14.01.40 Transit to Wilhelmshaven.
---------- Sea State: 2

15.01.40 Transit to Wilhelmshaven. Patrol East of English Coast.
---------- Sea State: 2

15.18 Aircraft spotted! Bearing 358 6000 meters.
Alarm! Dive! 45 meters! Depth under keel 70 meters.

15.19 Explosions above, not close. Boat at 45 meters.

18.30 Surfaced.

16.01.40 Transit to Wilhelmshaven.
---------- Sea State: 2

15.21 Received orders to send status report.

15.25 Status report transmitted to command.

17.01.40 Transit to Wilhelmshaven.
---------- Sea State: 0

11.20 Received radio report of enemy vessel in Grid AN 61 in North Sea.
Set course in attempt to locate as had sufficient fuel and two
eels remaining aboard.

18.01.40 Searched for enemy vessel.
---------- Sea State: 0

19.01.40 Resumed transit to Wilhelmshaven.
---------- Sea State: 0

20.01.40
---------- Sea State: 0

13.30 Arrived Wilhelmshaven.

Ships Hit
------------

1. British Cargo Vessel. 4,200 tons 14.12.39 Sunk by torpedo

2. Unknown Cargo Vessel 6,960 tons 22.12.39 Sunk by torpedo

3. British Cargo Vessel 5975 tons. 23.12.39 Sunk by gunfire

4. British Steam Trawler 330 tons 11.11.39 Sunk by gunfire

5. British Steam Trawler 330 tons 11.19.39 Sunk by gunfire

Matrosengefeiter M.H. Ritter seriously injured by aircraft bombing while on topside
watch. Detached upon return to Wilhelmshaven to recover.

Patrol duration: 69 days.
Torpedoes Fired: 12/14
Fuel Remaining: 22 percent of capacity

Bubblehead1980 · 06-11-22, 11:34 AM

Had external cam disabled on this one, so not as many screenshots.

Ship in convoy sped up and turned toward my periscope to ram.

A T1 G7a Torpedo missed its intended target in convoy, but went on to hit another, sinking it.

Love how steam trawler's boilers explode, pretty cool effect.

Bubblehead1980 · 06-12-22, 10:25 PM

Kriegstagebuch of the Kommandanten of "U-48"
for the period from 24.02.-18.03.1940.

Kommandant: Oberleutenant zur See Marche

24.02.40 Sea State: 1
--------- Weather: Clear

07.30 Departure from Wilhelmshaven.

13.42 Test Dive.

14.00 Surface. Set course for assigned patrol grid
in Western Approaches. Chose to transit Strait of Dover and
English Channel for transit to area.

25.02.40 Sea State: 1
--------- Weather: Clear

26.02.40 Sea State: 1
--------- Weather: Clear

10.00 Submerged in grid AN 887 for submerged approach
to Dover Straits for night time transit.

17.08 Distant sound contact bearing 090, possible patrol vessel.

20.00 Surfaced for transit of Dover Strait.

22.00 Begin transit of Dover Strait.

23.08 Merchant vessel spotted bearing 334 8000 meters in Grid
BG 1243 Southern end of Straits of Dover. Called
Action stations for surface torpedo attack.

23.20 Vessel identified as 3800 ton M-KF-M (P) Merchant, British.
Course 050 Speed 8 knots.

23.23 Flooded down to 7 meters.

21.25 Fired tube No.1 Torpedo missed.(TII G7e)

21.27 Fired tube No.2 Torpedo missed. (TII G7e)

21.29 Fired tube No.3 Torpedo prematurely detonated. (TII G7e)

21.38 Fired Tube No.4 (TII G7e)

21.40 Torpedo impact! Large fires and explosion

21.41 Surfaced, manned deck gun in case needed to complete sinking.

21.43 Opened fire with deck gun.

23.46 Ceased fire, vessel heavily listing, burning.

23.48 Large series of explosions. Vessel sunk Grid BF 33.

23.50 Secured Action Stations. Began torpedo reload, departed
area at high speed.

27.02.40 Sea State: 1
--------- Weather: Clear

00.10 Spotted merchant vessel beaing 328 8000 meters.
Grid BG 1245

00.20 Vessel identified as 4000 ton British merchant
M-KF-M (R) type. Course 050 9 kts.

00.30 Fired torpedo tube 6 (TII G7e)

00.32 Torpedo missed, unknown cause.

00.36 Opened fired with deck gun.

00.59 M-KF-M (R) type merchant sunk, grid BF 33.

01.00 Secured action stations, departed area.

09.47 Aircraft spotted! Bearing 226 7000 meters.
Alarm! Dive!

09.48 Leveled at 25 meters with 11 meters below keel.
Several large explosions above, no damage.

20.00 Surfaced.

28.02.40 Transit to assigned grid.
----------- Sea State: 1
Weather: Clear

09.52 Aircraft spotted bearing 184 5000 meters
Alarm! Dive!

09.53 Explosions, not close.

20.02 Surfaced.

29.02.40 Transit to assigned grid.
----------- Sea State: 1
Weather: Partial Clouds.

15.29 Aircraft spotted 168 4500 meters
Alarm! Dive!

15.30 Leveled at 45 meters. Explosions heard above.

20.10 Surfaced.

01.03.40 Transit to area.
--------- Sea State: 1
Weather: Clear

Moon: Partial
02.03.40 Transit to area.
--------- Sea State: 1
Weather: Clear
Moon: None

22.55 Received Contact Report of Enemy convoy
Grid BF 44 NNE Course Speed 6 kts.
Was quite close to current position,
set course to intercept.

03.03.40 Patrol. Searched for reported convoy.
----------- Sea State: 1, later 4.
Weather: Clear, later overcast, rain. Winds 13.5 kts direction 238.
Moon-None.

00.37 Convoy sighted Grid BF 17
Course 009 Speed 6 knots.
Contact Report sent.
Set course to pull ahead for attack.
Called Action Stations for surfaced torpedo attack.

00.51 Received reply to contact report. Ordered to attack.

01.49 As prepared to attack, a sudden fog and overcast arrived in area with rain
and 13 knot wind direction 269. Visiblity severely limited.
However, decided to attempt push home the attack if possible.

02.09 Spotted merchant vessel ahead. Readied bow tubes.

02.12 Fired Tube No. 2 (TII G7e) at 2500 ton merchant. Range 600 meters.

02.13 Torpedo impact! Ship exploded, sinking.

02.15 Proceeding high speed into center of convoy. Large merchant bearing 270 300 meters
attempted to ram. Star shells provided illumination.

02.17 2500 ton merchant vessel sunk Grid BF 17

02.21 Boat illuminated by searchlight of destroyer. Destroyer opened fire
from 1000 meters. Alarm! Dive!

02.22 Enemy above dropped depth charges, explosions as
passed 25 meters depth. Boat shaken,no serious damage.

02.29 Pinging, enemy searching. Boat depth 105 meters.

02.34 Depth 125 meters.

03.00 Enemy lost contact. Weather conditions aided in
ease of escape.

03.20 Secured Action Stations. Maintained Silent Routine.

04.55 Periscope depth. Storms remained. All clear.
Secured Silent Routine.

05.00 Surfaced.

04.03.40 Patrol.
----------- Sea State: 3
Weather: Overcast. Rain. Winds 13.5 kts direction 238.
Moon-None.

05.03.40 Patrol.
----------- Sea State: 3, later 5
Weather: Overcast. Rain. Winds 13.5 kts direction 248.
Later, winds increased to 30 kts direction 279.
Moon-None.

06.03.40 Patrol.
----------- Sea State: 5
Weather: Overcast. Rain. Winds 30 kts direction 279.
Moon-None.

07.03.40 Patrol.
----------- Sea State: 5
Weather: Overcast. Rain. Winds 30 kts direction 279.
Moon-None.

08.03.40 Patrol.
----------- Sea State: 5
Weather: Clear, light fog. Winds 30 kts direction 142.
Moon-None.

09.03.40 Patrol.
----------- Sea State: 5
Weather: Clear, light fog. Winds 30 kts direction 142.
Moon-None.

10.03.40 Patrol. Searched for reported convoy.
----------- Sea State: 5
Weather: Clear, light fog. Winds 30 kts direction 142.
Moon-None.

00.06 Received report of convoy in Grid m BF 47
Course North Speed 6 kts. Set course for intercept.

08.30 Submerged for sound check.

08.38 Detected distant screw noises bearing 313.

08.46 Surfaced. Set course for intercept.

09.54 Smoke plumes and outlines of convoy spotted bearings 010-040
estimated range twelve kilometers.

09.55 Action Stations.

10.00 Contact Report sent.
Convoy Sighted. Grid BF 41
Course 021 Speed 5 kts.

12.00 Submerged ahead of convoy for attack.

12.20 Inside convoy, entered through gap in forward screen.

12.24 Fired tubes 1,2 in salvo(TII G7e) on 8300 ton tanker . Range 700 meters.

12.25 Torpedo impact! Second torpedo hit, but failed to explode. A "thud"
was heard on impact but no explosion. Tanker damaged, burning from
torpedo one, which did detonate.

12.27 Fired tube No.3 (TII G7e) at tanker. Torpedo hit,
but failed to detonate.

12.28 Fired tube No.4 (TII G7e) Range 500 meters.Torpedo hit
failed to explode. Began turn to bring stern tube to bare.

12.36 Fired Tube No.5 (TII G7e) range 610 meters.

12.37 Torpedo hit, but again failed to explode!.

12.38 Destroyer spotted 800 meters, closing fast. Pinging began.
Ordered 120 meters hard dive. Rigged for depth charge
and silent routine.

12.51 Noises of vessel breaking up audible through hull
and on hydrophones.

13.00 Tubes 1,2 reloaded. Tube 5 reloaded.

13.10 Periscope depth. Observed tanker previously torpedoed, burning low in water.

Observed another large 8000 plus ton tanker about to cross
our stern. Set up for shot with Tube No.5

13.13 Fired Tube No.5 (TII G7e) Range 700 meters.

13.14 Torpedo impact! Large tanker burning.

13.15 Shifted target to previously torpedoed tanker
brought bow tubes around to fire.

13.18 Fired tube No.1 (TII G7e)

13.19 Torpedo impact on first tanker torpedoed

13.26 Fired Tube No.2 (TII G7e) on another undamaged 8300 ton tanker.
All torpedoes expended.

13.27 Torpedo hit, but failed to detonated. Another 'dud'!
However, vessel appeared disabled as was drifting, took no evasive action.

13.30 Unable to surface to finish off with deck gun due to proximity of enemy destroyer.

13.40 Went to 90 meters, rigged for silent routine due to nearby enemy destroyer.

13.55 8300 ton tanker sunk Grid BF 41. Massive explosions, followed by breaking up noises.
Rose to periscope depth to confirm.

14.15 Returned periscope depth. Enemy destroyers appeared to have moved on
with convoy.in view one tanker disabled by dud at 2000 meters astern. 6000 meters
ahead tanker torpedoed burning but underway. Another merchant or tanker is nerby,
likely providing assistance.

14.16 Went to 25 meters. Secured from action stations,
maintained silent routine.

14.27 Warship bearing 347 closing fast! Short range!
Ordered 90 meters! Hard dive! Rigged for depth charge.

14.30 Lost contact with enemy warship.
Continued to wait out enemy in order to surface after nightfall
and attack damaged tanker with deck gun if possible.

18.06 Periscope depth. Burning, crippled tanker bearing 315 4000 meters.
Went to 25 meters unil nightfall.

20.45 Surfaced for gun action. Sea state was heavy and made this difficult.

20.47 Opened fire with deck gun on crippled tanker.

21.06 Ceased fire, tanker exploded after 34 hits from high explosive rounds
and sunk. 8500 ton tanker sunk Grd BF 41.

21.10 Out of torpedos with five vessel sunk early in patrol, sent status report to
command.

21.40 Received orders to return to base.

11.03.40 Transit to Wilhelmshaven
----------- Sea State: 5
Weather: Clear, light fog. Winds 29 kts direction 082.
Moon-None.

12.03.40 Transit to Wilhelmshaven
----------- Sea State: 5
Weather: Clear, light fog. Winds 25 kts direction 082.
Moon-None.

12.03.40 Transit to Wilhelmshaven
----------- Sea State: 5
Weather: Clear, light fog. Winds 25 kts direction 082.
Moon-Full

13.03.40 Transit to Wilhelmshaven
----------- Sea State: 3
Weather: Clear, light fog. Winds 15 kts direction 242.
Moon-Partial

14.03.40 Transit to Wilhelmshaven
----------- Sea State: 3
Weather: Clear, light fog. Winds 15 kts direction 242.
Moon-None.

14.03.40 Transit to Wilhelmshaven
----------- Sea State: 3
Weather: Clear, light fog. Winds 15 kts direction 242.
Moon-None.

15.03.40 Transit to Wilhelmshaven
----------- Sea State: 3
Weather: Clear, light fog. Winds 14 kts direction 242.
Moon-Partial.

16.03.40 Transit to Wilhelmshaven
----------- Sea State: 3
Weather: Clear, no fog. Winds 12 kts direction 272.
Moon-Half.

17.03.40 Transit to Wilhelmshaven
----------- Sea State: 1
Weather: Clear
Moon-Half.

18.03.40
----------- Sea State: 2
Weather: Clear

07.30 Arrived Wilhelmshaven.

Ships Hit
------------

3 Merchants sunk- 3,800 tons, 4000 tons, 2800 tons.
2 Tankers sunk- 8,300 tons, 8,300 tons.
1 Tanker 8,500 tons damaged.

(Sadly, I was relieved of command upon return to port. In spite of success in three patrols, sinking of two tankers from neutral nations caused me to be removed and picked up by the Gestapo (Secret Police as it said) hmmm. This changed from OM, was not aware. Sinking neutral ships sailing with Allied ships is bound to happen, one was sunk by mistake when a torpedo missed target and hit the neutral)

Bubblehead1980 · 06-12-22, 10:33 PM

Tracked a convoy all day to attack on surface at night. Ideal conditions. During approach, suddenly a storm blew in, seas grew heavy with winds, and rain, a light fog. Fortunately, at close range I could still see the ships, so took advantage and moved in for attack. Sunk one merchant. Attempted to set up on another but heavy seas made maneuvering into position difficult. Soon a destroyer was on scene, forcing us to dive. Rather dramatic attack.

Bubblehead1980 · 06-16-22, 11:52 PM

Dark Waters/OM mod .
100 difficulty. Map contacts and external camera off.

First run in u boats without map contacts, a lot of fun.

Kriegstagebuch of the Kommandanten of "U-47"
for the period from 01.06.-09.07.1940

Kommandant: Oberleutenant zur See Streigler

01.06.40 Depature from Wilhelmshaven
---------- Weather: Clear
Sea State: 1
Moon: Partial

08.30 Departed Wilhelmshaven for assigned area.

02.06.40 Transit to Grid BE35
---------- Weather: Clear
Sea State: 1
Moon: Partial

0045 Test Dive. Depth under keel 35 meters.

0100 Surfaced.

03.06.40 Transit to Grid BE35
---------- Weather: Clear
Sea State: 1
Moon: Partial

04.06.40 Transit to Grid BE35
---------- Weather: Clear
Sea State: 1
Moon: Partial

10.00 Received orders to discontinue use of magnetic influence
detonators. Ordered all torpedoes switched to impact only.

05.06.40 Transit to Grid BE35
---------- Weather: Clear Clouds, Light fog. Winds 13 kts direction 121.
Sea State: 1
Moon: None

06.06.40 Transit to Grid BE35
---------- Weather: Clear Clouds, Light fog. Winds 29 kts direction 097.
Sea State: 5
Moon: None

07.06.40 Transit to Grid BE35
---------- Weather: Clear Clouds, Light fog. Winds 0 kts.
Sea State: 0
Moon: None: 0

05.43 At sunrise, spotted vessel at 18 km bearing 359.
Closed for intercept.

05.50 Submerged for attack.

06.12 Slowed for observation. Target is large tanker. Course
075. Speed 12 kts.

06.30 Fired Tube No.1 (TII G7e) at tanker. 2200 meters.

06.32 Torpedo impacted but failed to detonate.

06.34 Surfaced for gun action.

06.36 Opened fire with deck gun.

06.43 Tanker dead in water after multiple hits in stack/engine area.

06.46 Fired Tube No.2 (TII G7e) on surface, range 1500 meters.

06.47 Torpedo impact, large explosion. Tanker burned profusely,
multiple explosions followed.

07.02 8300 ton tanker sunk. Grid AM 26.

11.45 Spotted 330 ton steam trawler bearing 300 17200 meters.

11.55 Submerged for observation.

12.10 Surfaced for gun action.

12.11 Opened fired.

12.16 Steam Trawler 330 tons sunk. Grid AM 28.

08.06.40 Transit to Grid BE35
---------- Weather: Clear Clouds, Light fog. Winds 0 kts.
Sea State: 0
Moon: None

09.06.40 Patrol.
---------- Weather: Clear Clouds, Light fog. Winds 0 kts.
Sea State: 0
Moon: None

00.00 Entered assigned grid.

10.06.40 Patrol.
---------- Weather: Clear Clouds, Light fog. Winds 5 kts direction 131
Sea State: 1
Moon: None

11.06.40 Patrol.
---------- Weather: Clear Clouds, Light fog. Winds 17 kts direction 119.
Sea State: 3
Moon: Partial

12.06.40 Patrol.
---------- Weather: Clear Clouds, Light fog. Winds 21 kts direction 097.
Sea State: 4
Moon: None

11.45 Ship spotted bearing 347 range 17,100 meters.
Set course to intercept.

12.41 Lost visual contact. Winds Seas calmed suddenly to state 1.

12.42 Submerged for sound check.

12.44 Sound contact 314 degrees estimated 15,000 meters.

12.45 Surfaced to pursue.

12.54 Regained visual contact with vessel.

12.56 Action Stations-Gun Action.

13.11 Sunk K-KM-KF-K-KM-K Merchant 9000 tons by gunfire.
Grid BE36

13.12 Secured Action stations, resumed patrol.

13.06.40 Patrol
---------- Weather: Overcast, Rains, Heavy Fog. Winds 29 kts direction 031.
Sea State: 5
Moon: None

14.06.40 Patrol
---------- Weather: Clear Clouds, Light Fog, Winds 29 kts direction 127.
Sea State: 5
Moon: Half

15.06.40 Patrol
---------- Weather: Clear Clouds, Light Fog, Winds 29 kts direction 127.
Sea State: 5
Moon: Half

16.06.40 Patrol
---------- Weather: Clear Clouds, Light Fog, Winds 29 kts direction 127.
Sea State: 5
Moon: Half

17.06.40 Patrol
---------- Weather: Clear Clouds, Light Fog, Winds 11 kts direction 266.
Sea State: 2
Moon: Quarter

18.06.40 Patrol
---------- Weather: Clear Clouds, Light Fog, Winds 2 kts direction 248.
Sea State: 0
Moon: None.

19.06.40 Patrol
---------- Weather: Clear Clouds, Light Fog, Winds 2 kts direction 248.
Sea State: 0
Moon: Full.

11.30 Seas increased to State 5. Winds 29 kts direction 007.

22.12 Ship spotted bearing 302 10,500 kilometers.
Seas too heavy for deck gun attack, prepared for night
surface torpedo firing. Target course 045 11 kts.

20.06.40 Patrol
---------- Weather: Clear Clouds, Light Fog, Winds 28 kts.
Sea State: 5
Moon: Full.

00.09 Action stations for surface torpedo firing.

00.33 Target on course 035 9 kts. Turned boat about for
stern torpedo shot down moon.

00.57 Fired Tube No. 6 (TII G7e) Range 3000 meters.

00.59 Torpedo missed, target increased speed.

01.56 Sunk 5975 ton K-M-K-KF-K=M merchant Grid BF 18
by torpedo.

21.06.40 Patrol
---------- Weather: Clear Clouds, Light Fog, Winds 28 kts. direction 164
Sea State: 5
Moon: Three Quarters

22.06.40 Patrol
---------- Weather: Overcast , Light Fog, Rain, Winds 29 kts, direction 201.
Sea State: 5
Moon: None

23.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 3 kts, direction 306.
Sea State: 0
Moon: None

23.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 3 kts, direction 306.
Sea State: 0
Moon: None

24.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 11 kts, direction 306.
Sea State: 2
Moon: None

25.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 11 kts, direction 306.
Sea State: 2
Moon: None

26.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 4 kts, direction 306.
Sea State: 0
Moon: Full

27.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 0 kts.
Sea State:
Moon: Half

28.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 0 kts.
Sea State:
Moon: Half

11.50 Aircraft sptted bearing 136 15 km.
Alarm! Dive!

13.18 Surfaced.

29.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 13 kts.
Sea State: 3
Moon: Half

30.06.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 13 kts.
Sea State: 2
Moon: None

01.07.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 0 kts.
Sea State: 10
Moon: None

00.00 Received message to shift operations to Lorient, France

02.07.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 30 kts.
Sea State: 5
Moon: Half

03.07.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 28 kts.
Sea State: 5
Moon:

14.15 Submerged for sound check.

14.17 Distant prop noises bearing 322.

14.29 Contacts determined to be traveling east.

14.30 Surfaced. Set course to close contacts.

14.50 Task Force Sighted Grid AM 27
Course 117 Speed 20 kts.
One Battleship, One Cruiser, Two Destroyers.
Contact Report Sent.

15.00 Received acknowledgement of contact report.
Ordered to break contact. Unable to outpace
enemy speed. Heavy seas also slowed U Boat.
Shadowed as long as possible.

16.30 Broke Contact when TF changed course to North, increased speed.

18.25 Aircraft spotted bearing 059 6300 meters. Alarm!
Dive!

22.44 Surfaced. Seas Calm, winds 0 knots. No fog.

04.07.40 Patrol
---------- Weather: Clouds Clear, Light Fog, Winds 24 kts.
Sea State: 4
Moon: Partial

12.05 Received Report of Large Convoy in Grid AM 51.
Course East North East 7 kts.
Convoy position just 111 km away. Set course high speed to intercept

18.26 Near intercept point. Submerged for sound check.

18.29 Sound detected many screw noises bearing 000 ahead.

18.31 Surfaced to close.

18.47 Smoke sighted bearing 355.

18.51 Submerged for sound check.

19.00 Action Stations for torpedo attack.

19.35 Ahead of convoy at 25 meters depth, silent routine.
Worked to enter convoy and avoid escort.

20.00 At 120 meters to avoid incoming lead escort, as convoy shifted course.

20.11 Escort passed above. Ordered periscope depth.

20.19 Periscope depth. Position inside convoy center columns.
Set up on large tankers.

20.28 Fired Tubes 1,2,(TII G7e) at. 8.300 ton tanker. Range 650 meters.

20.29 Torpedo impact! Torpedo impact! Tanker on fire.

20.30 Fired Tube No. 5 at 6800 ton tanker astern. Range 700 meters.
(TII G7e)

20.31 Torpedo impact! Pinging. Enemy corvette bearing 352 800 meters, closing
fast. Alarm! Hard dive on planes. Rigged for Wasserbombe and silent routine.

20.32 Passed 44 meters as numerous Wasserbombe exploded.Boat shaken but no damage.

20.33 More pings and Wasserbombe.

20.38 Sounds of ships sinking, breaking up. Explosions.

20.49 Pinging. Enemy closing fast. Stood by for Wasserbombe.

20.52 120 meters depth. Leveled off.

20.54 More pinging.

20.59 Large explosions astern...sound of tanker exploding.

21.25 Secured Silent Routine. Ordered torpedoes reloaded.

21.35 Tubes reload. Resumed Silent Routine.

21.56 Secured Action Stations. Maintained Silent Routine.
Waited out enemy above.

22.10 8,300 ton tanker sunk Grid AM 51.

23.05 Periscope Depth. Dusk.
Spotted Destroyer bearing 030 8000 meters.
Spotted Corvette 060 5000 meters.
Spotted crippled tanker down by bow bearing 093 3800 meters.
This was second tanker torpedoed (Tube No.5).
Began turned about for follow up attack
on tanker.

23.34 Fired Tube No.3(TII G7e) at crippled tanker.
Range 2300 meters.

23.37 Torpedo impact! Large explosions. Tanker began to sink by bow.

23.38 6,800 ton tanker sunk Grid AM 51. Sunk by bow.

23.39 Resume Silent Routine. Ordered 80 meters.

05.07.40 Continued pursuit of convoy.
---------- Weather: Clouds Overcast, No Rain, Light Fog, Winds 9 kts.
Sea State: 1
Moon: Obscured, quarter.

01.15 Periscope depth.

01.20 Surfaced. Set pursuit course 079.

01.55 Ships spotted bearing 000-015 10000 meters. Visual
contact was intermittent due to fog.

01.56 Action Stations for torpedo firing-surface.

02.10 Lighting strikes in area. Light but strong fog.
In spite of no moon, this summer night was quite bright.

02.13 Passed tanker 4000 meters to port, began turn for bow shot.

02.18 As prepared to fire, enemy destroyer appeared suddenly from fog, firing
guns and illuminated boat with spot light. Ordered ahead flank and fired
Tubes No.1(TII G7e) and No.2 (TII G7e) at 6500 ton tanker.Range 1500 meters

Turned toward Destroyer after torpedo 2 exited tube to provide 0 AOB.
Destroyer was now just 800 meters, closer than originally thought. Under fire,
ordered dive. Rigged for wasserbombe and silent routine.

02.19 As passed 26 meters, wasserbombe explosions, one close. Leaks
reported in stern torpedo compartment.

02.20 More wasserbombes, boat shaken.

02.21 Torpedo impact! Torpedo Impact! Both torpedoes hit target.

02.23 Leaks controlled.

02.25 Pinging.

02.40 Depth 150 meters.

03.05 Enemy destroyers heard leaving area high speed.

03.40 Periscope depth. All clear.

03.45 Surfaced. Set pursuit course.

03.50 Spotted damage tanker, listing but underway bearing 010 10,000 meters.

04.02 Fired Tube No.4 (TII G7e) at damaged tanker. Range 2600 meters.
All bow torpedoes expended.

04.04 Torpedo missed, unknown reasons.

04.11 Enemy destroyers closing astern 4000 meters and from starboard
3,000 meters.

04.13 Fired Tube No.5 (TII G7e) at damaged tanker. Range 2700 meters.
All torpedoes expended.

Ordered dive, enemy destroyer closing. Just after ordering dive, enemy
destroyer at bearing 040 illuminated the boat and opened fire from range
2900 meters. Rigged for silent routine and wasserbombe.

04.16 Torpedo impact! Many large explosions from tanker.
Enemy destroyer above. Splashes!

04.17 Wasserbombe explosions, not close.

04.19 Pinging.

04.24 Depth 120 meters. Pinging. Enemy closing.

04.33 Short series of pings. Enemy warship closing fast.

04.34 Enemy passed above, splashes heard.

04.56 Explosions, above. Boat at 130 meters.

05.01 Secured Action Stations. Maintained Silent Routine.
Boat at 140 meters.

09.00 Periscope depth. All clear. Secured Silent Routine.
Set course 180. Remained submerged at 45 meters through daylight.

19.20 Surfaced. Set course of Loritent

06.07.40 Transit to Lorient.
---------- Weather: Clear Clouds. No Rain. Light Fog. Winds 13 knots.
Sea State:2
Moon: None

07.07.40 Transit to Lorient.
---------- Weather: Clear Clouds. No Rain. Light Fog. Winds 3 knots.
Sea State:0
Moon: None

05.14 Convoy Sighted. Grid BF 11
Course 327 Speed 7 knots.
Contact Report sent. Out of torpedoes, unable to attack.

08.07.40 Transit to Lorient.
---------- Weather: Clear Clouds. No Rain. Light Fog. Winds 3 knots.
Sea State:0
Moon: None

09.07.40 Arrived Lorient
---------- Weather: Clear Clouds. No Rain. Light Fog. Winds 3 knots.
Sea State:0
Moon: None

09.00 Arrived Lorient, docked. End of patrol.

Ships Hit
------------

1. Tanker 8300 tons by torpedo
Grid AM 26 June 7 1940

2. Steam Trawler 330 tons by gunfire
Grid AM 28 June 7, 1940

3. K-KM-KF-K-KM-K Merchant by torpedo.
9000 tons Grid BE 36
June 12, 1940
4. K-M-K-KF-K-M Merchant
6000 tons Grid BF 18
June 20, 1940

5. Tanker 8300 tons by torpedo.
Grid AM 51 July 4, 1940

6. Tanker 6,800 tons by torpedo
Grid AM 51 July 4, 1940

7. Tanker 6,500 tons by torpedo
Grid AM 52 July 5, 1940

Final Tonnage Awarded: 48,928 tons.

Damage
-----------

1. Leaks in Stern Torpedo Compartment.
Repaired at sea. Cause: Wasserbombe explosions.

2.Starboard electric Engine. Repaired at sea
Cause" Wasserbombe explosions.

3.Radio Antenna. Repaired at sea.
Cause: Machine Gun fire, enemy destroyer.

4. Observation periscope. Repaired at sea.
Cause: Gunfire, enemy destroyer and/or wasserbombe explosions.

5. Light bulbs and Glass fixtures.
Cause: Wasserbombe explosions.

06-01-22, 05:14 AM	#5266
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	USS CISCO SS-290 Third Patrol Screenshots (Part I) AIKOKU MARU Class Auxiliary Cruiser sinking. Fired four MK 18. Target was making 18 knots. One MK 18 torpedo hit the stern, knocking out the prop and starting a fire. The fire burned on and off over a hour while the vessel flooding by the stern and eventually sunk. I had TheDarkWraith's fire damage mod enabled, pretty cool. AIKOKU MARU Class Auxiliary Cruiser 14280 tons Bow of AIKOKU MARU Class Auxiliary Cruiser protruding. 1600 ton tankers burning after four MK 14 hits. Tanker was in center of convoy and as tankers are priority targets...fire four to ensure the kill. Escorting DD of the Auxiliary Cruiser. KANAGA MARU with two large holes sinking with crew in lifeboat. Torpedo Attack No.7 (final torpedo attack of patrol) Sunk a 5100 ton tanker in night surface attack. Blew up nicely. Range from target is about 3300 yards. Tanker was in center column. Fired from outside about 2000 yards off starboard column.

06-01-22, 05:18 AM	#5267
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	USS Cisco SS-290 Third War Patrol Screenshots (Part II) Torpedo Attack No7. Night surface attack. Fired from 2000 yards off starboard column at tanker in center. Took a lot of gunfire after torpedoes hit, but no hits, managed to get away with escorts pursuing. Loaded tankers blow up nicely. With EAX sound enabled, really a neat experience. Auxiliary Cruier's prop knocked off by MK 18 torpedo.(Torpedo Attack No.1)

06-02-22, 09:00 PM	#5270
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	USS CISCO SS-290 Fourth War Patrol 5 March-9 April 1944 War Patrol Report USS CISCO SS-290 Fourth War Patrol March 5-April 9, 1944 PROLOGUE -------------- Arrived Brisbane, Australia from THIRD War Patrol on January 31, 1944. Normal refit was conducted by base personnel. APR-1 Radar Warning Receiver installed. CISCO was dry docked on 10 February in order to apply new Measure 32 paint scheme for reduced visibility. Painting completed on 23 February. Executive Officer, LCDR A.F. Weinel, USN, detached. LCDR J.D. Miller, USN, designated as Executive Officer. Ensign C.D. Calder, USNR, and Ensign W.F. Henderson, USNR, reported aboard 24 February. Training period conducted in Moreton Bay area 26 February-1 March. Twenty four MK 23-1 torpedoes and all provisions loaded 2-4 March. Ready for sea 5 March 1944. NARRATIVE ---------- 0800 Departed Brisbane, Australia in company with HADDO per CTF Operation Order 36-44. Assigned to conduct patrol operations South of Palau through 29 March and then unless otherwise instructed, assume lifeguard station in support of airstrikes scheduled for 30 March. 0914 APR-1 detected radar emissions of escort bearing 005. 0942 Rendezvoused with escort. 0950 Proceeded through minefield with escort and HADDO. 1400 Escort detached. Continued on with HADDO. Course 005 for Milne Bay en route assigned area. Conducted sighting drills and tuning of SJ radar with HADDO. APR-1 detected HADDO's SJ signals. 1508 Trim Dive. 1530 Surfaced. 2100 Conducted night sighting drills as HADDO also sporting newly applied MS 32. Difficult to visually spotted HADDO at 2000+ plus yards with small AOB. 2300 Upon conclusion of sighting drills. Formed patrol line with HADDO 10 miles apart en route Milne Bay. March 6 ---------- En route Milne Bay. 1532 APR-1 detected radar signals bearing 160. 1534 SD contact made at 21000 yards. (Aircraft Contact No.1) March 7 ---------- 2226 Parted company with HADDO, set course for Jomard Pass en route Milne Bay. March 8 ---------- En route Milne Bay. March 9 ---------- 1100 Docked at tender U.S.S. Fulton, Milne Bay. Topped off fuel and provisions. 1630 Departed Milne Bay for assigned area. March 10 ----------- En route area. March 11 --------- 0754 SJ contact 28250 yards bearing 002. (Ship Contact No.1) Likely friendly patrol in Vitiaz Strait. Avoided. March 12-14 ------------ En route area. March 15 --------- 0000 Entered patrol area 175 NM SE of Palau. March 16 ---------- 0630 Dawn rain showers, heavy fog, choppy seas. 1200 Storms cleared. Calm seas, clear visibility. 1251 APR-1 detected radar emissions bearing 125. 1252 SD contact 14000 yards closing. Dive! (Aircraft Contact No.2) 1254 CISCO at 150 ft. Two large explosions forward, not close. 1719 APR-1 detected radar emissions bearing 280. No SD contact. Submerged to avoid likely aircraft searching area. 2000 Surfaced. March 17 --------- Patrol in area. March 18 --------- Patrol in area. Heavy seas, overcast, moderate do. Winds 30 knots direction 260. 1320 SD contact 21500 yds.(Aircraft Contact No.3) Dive. 1554 Surfaced. March 19 --------- Patrol in area. March 20 --------- Patrol in area. March 21 ---------- Patrol in area. 0300 Received ULTRA regarding enemy submarine departing Southern entrance Palau lagoon 23 March. March 22 ---------- Set course to take position South of Palau. 1124 Submerged for patrol 25 miles West of Angaur Island. 2030 Surfaced. March 23 ------------ TORPEDO ATTACK NO.1 ---------------------------- 0505 SJ contacts bearing 013 29000 yards. (Ship Contact No.2) Turned to intercept. 0507 Contacts appeared to be convoy approaching Southern entrance to Palau. 0509 GENERAL QUARTERS-TORPEDO-SUBMERGED. 0513 Submerged for attack at dawn before convoy entered lagoon. 0604 One AK leading a AO, one DE escorting, course 070 10 kts. 0616 Fired tubes 1,2,3 at AO. Fired tubes 4,5,6 at AK. 0617 Torpedo impact! Torpedo impact! Torpedo impact! AO burning, keel busted. 0618 Torpedo impact on AK bow! Other two missed ahead as AK slowed. 0620 Pinging. DE closing. Rigged for Silent Running and Depth Charge. Ordered 450 ft. 0624 DE overhead. CISCO AT 350 FT. Splashes! (Depth Charge Attack No.1) 0625 DC explosions. Two close. Boat shaken. Damage reported (See DAMAGE AND DEFECTS) 0627 Close DC. 0641 Close DC. 0646 DE crossed off bow of CISCO. Many splashes heard. 0648 Close DC. Boat Shaken. Depth 575 ft. 0654 After going "silent for several minutes, enemy began to ping and close from astern. 0656 DC explosions, not close. 0700 Pinging. More DC explosions, not close. 0701 Pinging. 0704 Pinging ceased. 0706 Pinging resumed. 0707 CISCO at 580 ft. 0709 DD above, splashes. 0711 Many DC explosions. 0715 DD above, from astern. 0716 Many splashes and explosions. 0717 Many DC explosions. 0722 DE above. CISCO at 600 ft. 0723 Splashes. 0724 DC explosion, close. Boat shaken. 0737 More DC explosions, astern. 0840 Lost contact with enemy. CISCO at 650 ft. 0943 Secured Silent Running. Ordered bow tubes reloaded. 1023 Many prop noises bearing 302 long range. Ordered periscope depth. 1035 Periscope depth. Sighted convoy bearing 234 8 miles. Convoy departing Palau. Two AO, four AK, two DE. Course 270 9 kts. Contact Report sent to CTF 72. (Ship Contact No.3) Due to battery limitations unable to close for attack submerged. Waited for convoy clear area for end around. Secured GQ. 1118 Received orders from CTF-72 not to engage convoy, other assets will be directed to intercept. 1201 Lost visual and sound contact with convoy. Set course to return for intercept of enemy sub due to depart Palau, although it is likely sub rerouted after attack. 1204 Enemy DE from Torpedo Attack No.1 still in area, hunting. 1453 Periscope depth. Spotted Aircraft(MAVIS) bearing 055 16200 yards, circling above scene of morning attack, where DE still present. (Aircraft Contact No.4) 2000 Surfaced. 2109 Stopped to listen with hydrophones. 2111 Sound contact, faint, bearing 347. Turned to investigate. (Ship Contact No.3) TORPEDO ATTACK NO.2 ----------------------------- 2114 Submarine spotted! Bearing 357 9000 yards. No SJ contact. GENERAL QUARTERS-TORPEDO-SURFACE. 2117 Contact zigging on base course 195. 10 kts. 2135 Readied tubes 7,8,9,10 to fire. 2136 Solution plotted to fire torpedoes on individual bearings aimed at middle of target, Aft and forward to cover the sub during zigs. 2140 Fired tubes 7,8,9,10 at I Class Submarine. 3050 yds. 2142 Torpedo impact on stern as target zigged to starboard(away) from CISCO. Large explosion, followed by two more large secondary explosions, likely torpedoes cooking off from impact. Submarine sunk in 43 seconds. 2144 Three other torpedoes missed, reached end of run. 2200 Secured GQ. Departed area to allow it to "cool down." March 24 ------------ 0725 Submerged for the day to rest, repair, an avoid storms. 2000 Surfaced. March 25 --------- 0400 Weather cleared. Calm seas. 0954 Radar emissions detected bearing 350 15000+ yards. Judged to be likely aircraft due to rapid bearing change. Submerged to avoid. March 26 ---------- Patrol in area. March 27 ---------- 1634 SD Contact 10000 yards, closing!. Dive! (Aircraft Contact No.5) 1635 Explosions, above. CISCO at 145 ft. 2100 Surfaced. March 28 ---------- 1524 Aircraft spotted! bearing 085 7500 yards. Dive! (Aircraft Contact No.6) Dive! SD did not detect AC. 1525 As passed 84 feet, several large explosions, close. Only damage was a few broken light bulbs and glass fixtures. 2000 Surfaced. Overcast, light fog. Winds 11 knots, direction 020. Light chop. March 29 ---------- Patrol in area. 2214 Arrived at Lifeguard station 10 NM East of Palau for DESECRATE I. March 30 ---------- Torpedo Attack No.3 -------------------- 0006 SJ contacts bearing 334 24000 yds. (Ship Contact No.4) 0025 GENERAL QUARTERS-TORPEDO-SURFACE 0034 APR-1 detected radar emissions. Contact range 4200 yards. 0034: Shell splashes! 35 yards, astern!. Dive! 51 0035 Passed 80 ft, rigged for silent running and depth charge. 0042 500 ft. Turned to closest escort to minimize profile to beam. 0043 Pinging began (Depth Charge Attack No.2) 0044 Enemy passed above. Did not drop DC as expected. 0045 Pinging from second escort. Turned to minimize profile. 0046 Enemy above. Many splashes. 0047 Many DC explosions. Boat shaken. 0050 Enemy above splashes. 0051 DC explosions. 0052 Many DC explosions astern. 0056 Enemy astern closing fast. Short scale pinging. 0057 Splashes. Enemy above. 0059 Explosions. Boat shaken. 0100 Second enemy above. Splashes. 0101 Explosions. 0102 Many more splashes ahead. 0102: Many explosions. Close. Boat shaken. Damage reported ( 30 See DAMAGE AND DEFECTS). 0106 CISCO at 600 ft. Enemy passed above. Splashes. 0109 Explosions above. CISCO at 675 ft. 0126 A loss of control of boat led us to 730 feet before gained control. Enemy seemed to be unable to track us at this depth. They continued to unload depth charges at last contact location and along estimated course. All charges were above. 0140 Splashes above. 0142 Explosions, above somewhat close. Boat shaken. Leaks in conning tower, forward control room. 0144 Leaks under control. (See DAMAGE AND DEFECTS) 0146 More explosions, not close. 0211 Enemy seemed to finally lose contact. Many DC explosions astern continued for some time. 0330 Last DC explosion heard astern, distant. 0335 SJ sweep at radar depth. 0340 Surfaced 0345 Secured GQ. Recharge batteries, repair damage. Set course for lifeguard station. 0817 SD contacts 14000 yards. (Aircraft Contact No.7) 0819 Spotted friendly air strikes inbound. TBF, SB2C, SBD, F6F. 0820 Witnessed midair collision parachutes observed, splashed in water. Smoke marker visible. Set course to pick up at flank speed. 0823 Second smoke marker observed. 0832 SD contact 12000 yards closing. Simultaneously spotted downed aviator 021. Dive! Spotted a MAVIS bearing 270.(Aircraft Contact No 8) 0834 Explosions, astern. 0840 GENERAL QUARTERS. Standby for rescue and Anti-Aircraft. 0845 Periscope depth. Spotted raft with downed aircrew bearing 061 4000 yds. Surfaced. 0850 Rescued aircrew in raft. (Rescue No.1) 0908 Rescued downed aviator. (Rescue No.2) 1304 Rescued downed aviator. (Rescue No.3) 1900 Last strike concluded. Per operation order, set course for Yap in support of strikes on 31 March. March 31 --------- 0425 Arrived at Lifeguard Station 10 NNE of Yap. 0600 Submerged. 0700 Sound contact: Warship bearing 358 long range, medium speed, moving away.(Ship Contact No.5) 0840 Raised SD antenna to detect strike. 0846 Observed air strike on harbor. One AK one SC sunk by dive bombers. 0851 Parachutes spotted, landed inland, not near shore. 1900 Spotted raft with aircrew and downed aviator in water. Surfaced.Rescue stations manned. 1905 Rescued up TBF aircrew in raft. (Rescue No.4) 1915 Rescue downed SBD pilot in water. (Rescue No.5) 1920 Spotted smoke marker bearing 015. 1950 Spotted two men in water. Assumed rescue stations. 2001 Rescued two downed aircrew. (Rescue No.6) 2002 Continued to search area of Yap down downed aircrews. April 1 -------- 0000 Released from Lifeguard Station per CTF-72. Ordered to new patrol area SSW of Guam. Set course at standard speed. 0701 Dawn. Aircraft spotted bearing 190 6000 yds, altitude 500 ft, closing! (Aircraft Contact No.9) Dive! SD failed to detect low flying aircraft. 0702 As CISCO passed 67 ft, three large explosions, boat shaken severely, damaged reports piled in (See DAMAGE AND DEFECTS). 0703 Flooding in multiple compartments. 0704 Damage Control Party formed. 0706 Boat sunk to 180 ft. Two more large explosions, above. 0707 Flooding controlled in Forward torpedo, Aft torpedo, and both Engine rooms. Flooding in conning tower and control room continued, most serious in conning tower. 0709 Flooding in conning tower and control room contained. Boat heavy and trim pump severely damaged, unable to maintain exact depth bounced between 190 and 250 ft. 0710 Engineering reported battery capacity at just 30 percent, aft batteries damaged severely. 0730 Boat began to sink at uncontrolled rate due flooding and loss of power and trim pump, inability to compensate Ordered standby for Battle Surface-Anti-Aircraft. 0731 Blew ballast tanks for emergency surface! 0733 Surfaced. AA guns manned. No aircraft in sight. 0734 Set course to South with guns manned while emergency repairs continued. 1101 Water pumped from all compartments. Trim pump reported damaged beyond repair. 1120 Inspection revealed hull damage, with trim and hydraulic pumps damaged beyond repair. Batteries no holding full charge. JP sonar inoperative. Repairs continued. 1301 APR-1 detected radar emissions bearing 200. Submerged to avoid likely aircraft. Struggled to maintain depth between 100-150 feet. 1430 Surfaced. 2300 Considering heavy damage to CISCO, sent report to CTF-72 and set course for Brisbane. April 2-3 --------- En route Brisbane. April 4 --------- 1800 SJ contact 27000 yards. (Ship Contact No. 6) 1835 Exchanged recognition signals with two US DD. Patrol in Vitiaz Strait. April 5-8 --------- En route Brisbane. April 9 ---------- 1035 Docked at Brisbane, Australia. Terminated war patrol. WEATHER -------------- Weather in area was overall pleasant, with squalls quickly arriving and departing, quite normal for the area. NAVIGATIONAL AIDES ---------------------------- Lights on Palau, Angaur, Peleliu, and Yap Islands all provided aides in navigation. CONTACTS ---------------- Aircraft --------- NO.1 DATE 1944/03/06 TIME 1534 LAT 22-2S LOG 153-51E BRG 160* RNG 21000 yards. ALT -- CRS -- SPD -- HOW SJ,APR-1 TYPE -- REMARK Bearing based on APR-1 RWR bearing. NO.2 DATE 1944/03/16 TIME 1252 LAT 5-30N LOG 134-40E BRG 125 RNG 14000 yds ALT -- CRS -- SPD -- HOW SD,APR-1 TYPE -- REMARK * Based on APR-1 RWR bearing. NO.3 DATE 1944/03/18 TIME 1320 LAT 4-50N LOG 134-50E BRG -- RNG 21500 yds ALT -- CRS -- SPD -- HOW SD TYPE -- REMARK NO.4 DATE 1944/03/23 TIME 1320 LAT 7-03N LOG 134-07E BRG 055 RNG 16200 yds ALT 1200 ft CRS -- SPD 125 kts HOW Visual TYPE MAVIS REMARK Contact circled scene of Torpedo Attack No.1 NO.5 DATE 1944/03/27 TIME 1634 LAT 4-50N LOG 134-40E BRG -- RNG 10000 yds ALT -- CRS -- SPD -- HOW SD only TYPE -- REMARK Bombed by contact. NO.6 DATE 1944/03/28 TIME 1524 LAT 5-10N LOG 132-50E BRG 085 RNG 7500 yds ALT 2000 CRS 200 SPD 200 kts HOW Visual TYPE KATE REMARK Bombed by contact. NO.7 DATE 1944/03/30 TIME 0817 LAT 7-13N LOG 134-32E BRG 040 RNG 14000 yds ALT 12000 ft CRS 310 SPD 200 kts HOW SD-Visual TYPE TBF,SB2C,SBD,F6F REMARK NO.8 DATE 1944/03/30 TIME 0832 LAT 7-13N LOG 134-32E BRG 270 RNG 12000 yds ALT 2000 CRS 100 SPD 150 kts HOW SD,Visual TYPE MAVIS REMARK Bombed by contact during rescue attempt of downed aviator. NO.9 DATE 1944/03/31 TIME 0701 LAT 11-0N LOG 139-0E BRG 190 RNG 6000 yds ALT 500 ft CRS 200 SPD 250 kts HOW Visual only TYPE BETTY G4M REMARK Bombed by contact at dawn. Heavy damage. SD did not detect low flying contact. APR-1 detected no radar emissions. Ships ------ NO.1 DATE 1944/03/11 TIME 0754 LAT 5-50N LOG 147-30E BRG 002 RNG 28250 yds CRS -- SPD -- HOW SJ TYPE -- REMARK Patrol in Vitiaz Strait. Likely friendly. Avoided. NO.2 DATE 1944/03/23 TIME 0505 LAT 7-03N LOG 134-07E BRG 013 RNG 29000 yds CRS 070 SPD 10 kts HOW SJ-Visual TYPE AK,AO,DE REMARK TORPEDO ATTACK NO.1 NO.3 DATE 1944/03/23 TIME 1035 LAT 7-03N LOG 134-07E BRG 302 RNG 16200 yds CRS 070 SPD 10 kts HOW Sound(JP)-Visual TYPE AK,AO,DE REMARK Contact Report sent to CTF-72 Serial 03234411. NO.3 DATE 1944/03/23 TIME 2111 LAT 6-52N LOG 134-0E BRG 347 RNG 13000 yds* CRS 195 SPD 10 kts-zigging HOW Sound-Visual TYPE SS REMARK Torpedo Attack No.2 * Estimated range at time of sound contact. Visual contact established at 9000 yds NO.4 DATE 1944/03/30 TIME 0006 LAT 7-9N LOG 134-35E BRG 334 RNG 24000 yds CRS 040 SPD 15 kts HOW SJ,Visual, APR-1 TYPE DE,SC REMARK ASW patrol. Depth Charge Attack No.2 NO.5 DATE 1944/03/31 TIME 0700 LAT 9-39N LOG 138-4E BRG 358 RNG 15000+ yds CRS -- SPD 11 kts HOW Sound only (JP) TYPE Warship-Unknown. Likely PC. REMARK NO.6 DATE 1944/04/04 TIME 1800 LAT 5-52S LOG 147-41E BRG 358 RNG 27000 yds. CRS 004 SPD 16 kts HOW SJ-Visual TYPE DD,DD REMARK USN patrol in Vitiaz Strait. Exchanged recognition signals. ATTACKS -------------- USS CISCO SS-290 TORPEDO ATTACK NO.1 WAR PATROL NO.4 DATE: March 23, 1944 TIME: 0616 LAT:7-03N LOG: 134-07E ------------------------------------------------ TYPE OF ATTACK Submerged-Periscope-Dawn SHIPS SUNK AO ARARE MARU 2800 tons Verification: Observed three torpedoes hit target. Turned burned profusely, keel split in two. SHIPS PROBABLY SUNK SHIPS DAMAGED AK SURABAYA MARU 5186 tons Verification: Observed torpedo hit bow. Bow severely damaged. SHIPS PROBABLY DAMAGED TARGET DATA (at firing) -------------------------------- CLASS AO NAME ARARE MARU TONS 2800 DRAFT 14.8 ft MAST 90.9 ft CRS 070 SPD 10 kts AOB 78 P RNG 2280 yds BRG 026 TRUE BRG 185 REMARK Target No.1 CLASS AK NAME SURABAYA MARU TONS 5186 DRAFT 15.7 ft MAST 94.5 ft CRS 070 SPD 10 kts AOB 93 P RNG 1986 yds BRG 355 TRUE BRG 155 REMARK Target No.2 TORPEDO FIRE CONTROL DATA (at firing) ------------------------------------- TUBE NO.1 TYPE MK 23-1 SERIAL NO.46500 EXPLODER MK 6-4 SERIAL NO.17500 GYRO 016 L COURSE 175 TRACK 78 P METHOD Single Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 6 ft POA MOT ACTUATION Contact ACTUAL ACTUATION Contact HIT Yes POI MOT ERRATIC MALFUNCTION REMARK TUBE NO.2 TYPE MK 23-1 SERIAL NO.46501 EXPLODER MK 6-4 SERIAL NO.17501 GYRO 016 L COURSE 175 TRACK 78 P METHOD Single Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 6 ft POA MOT ACTUATION Contact ACTUAL ACTUATION Contact HIT Yes POI MOT ERRATIC MALFUNCTION REMARK TUBE NO.3 TYPE MK 23-1 SERIAL NO.46502 EXPLODER MK 6-4 SERIAL NO.17502 GYRO 016 L COURSE 175 TRACK 78 P METHOD Single Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 6 ft POA MOT ACTUATION Contact ACTUAL ACTUATION Contact HIT Yes POI MOT ERRATIC MALFUNCTION REMARK TUBE NO.4 TYPE MK 23-1 SERIAL NO.46503 EXPLODER MK 6-4 SERIAL NO.17503 GYRO 341 L COURSE 141 TRACK 108 P METHOD Single Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 7 ft POA MOT ACTUATION Contact ACTUAL ACTUATION Contact HIT Yes POI Bow ERRATIC No MALFUNCTION No REMARK TUBE NO.5 TYPE MK 23-1 SERIAL NO.46504 EXPLODER MK 6-4 SERIAL NO.17504 GYRO 341 L COURSE 141 TRACK 108 P METHOD Single Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 7 ft POA MOT ACTUATION Contact ACTUAL ACTUATION -- HIT No POI -- ERRATIC No MALFUNCTION No REMARK Missed ahead when target slowed after impact on Target No.1 alerted. TUBE NO.6 TYPE MK 23-1 SERIAL NO.46505 EXPLODER MK 6-4 SERIAL NO.17505 GYRO 341 L COURSE 141 TRACK 108 P METHOD Single Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 7 ft POA MOT ACTUATION Contact ACTUAL ACTUATION -- HIT No POI -- ERRATIC No MALFUNCTION No REMARK Missed ahead when target slowed after impact on Target No.1 alerted. OWN SHIP DATA (at firing) -------------------------- DEPTH 64 ft COURSE 168 SPEED 2.5 kts ANGLE 1-down SEA STATE Light Chop REMARK Pre-dawn, half moon. __________________________________________________ ___________ USS CISCO SS-290 TORPEDO ATTACK NO.2 WAR PATROL NO.4 DATE: March 23, 1944 TIME: 2140 LAT:6-52N LOG:133-56 E ------------------------------------------------ TYPE OF ATTACK Night-Surface-Torpedo SHIPS SUNK I-Class Submarine 1800 tons 12.5 miles West of Angaur Island, Palau. Verification: Observed torpedo hit target in stern as target zigged to starboard away from two other torpedoes. Hit caused massive explosion, followed by two larger secondary explosions. This is likely as a result of hit on aft torpedo room, igniting torpedoes. Submarine burned profusely and sunk in 43 seconds. SHIPS PROBABLY SUNK None SHIPS DAMAGED None SHIPS PROBABLY DAMAGED None TARGET DATA (at firing) -------------------------------- CLASS SS NAME I-Class Submarine TONS 1800 DRAFT 16.9 ft MAST -- CRS 195 SPD 10 kts AOB 70 P RNG 3050 yds BRG 188 TRUE BRG 292 REMARK Target zigging on base course. TORPEDO FIRE CONTROL DATA (at firing) ------------------------------------- TUBE NO.7 TYPE MK 23-1 SERIAL NO.46517 EXPLODER MK 6-4 SERIAL NO.17517 GYRO 357 L COURSE 101 TRACK 98 P METHOD Constant Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 5 ft POA MOT ACTUATION Contact ACTUAL ACTUATION -- HIT No POI -- ERRATIC No MALFUNCTION No REMARK Missed TUBE NO.8 TYPE MK 23-1 SERIAL NO.46518 EXPLODER MK 6-4 SERIAL NO.17518 GYRO 357 L COURSE 101 TRACK 98 P METHOD Constant Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 5 ft POA MOT ACTUATION Contact ACTUAL ACTUATION -- HIT No POI -- ERRATIC No MALFUNCTION No REMARK Missed TUBE NO.9 TYPE MK 23-1 SERIAL NO.46519 EXPLODER MK 6-4 SERIAL NO.17519 GYRO 357 L COURSE 101 TRACK 98 P METHOD Constant Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 5 ft POA Stern ACTUATION Contact ACTUAL ACTUATION Contact HIT Yes POI Stern ERRATIC No MALFUNCTION No REMARK Torpedo impacted as "up the pipe" as target turned away avoiding first two torpedoes. Massive explosion and secondary explosions likely from impact in aft torpedo room. TUBE NO.10 TYPE MK 23-1 SERIAL NO.46520 EXPLODER MK 6-4 SERIAL NO.17520 GYRO 357 L COURSE 101 TRACK 98 P METHOD Constant Bearing SPREAD Divergent INTERVAL 5 seconds POWER Standard DEPTH 5 ft POA Bow ACTUATION Contact ACTUAL ACTUATION -- HIT No POI -- ERRATIC No MALFUNCTION No REMARK Missed forward, after torpedo impact (Tube 9) sunk target. OWN SHIP DATA (at firing) -------------------------- DEPTH Surfaced COURSE 295 SPEED 5 kts ANGLE 0-Up/Down SEA STATE Calm REMARK Backed down to close range on zigging submarine. Timed the zigs fired each torpedo on individual bearings for coverage ,expected one would hit as target zigged along base course. ANTI-SUBMARINE COUNTERMEASURES AND EVASION ----------------------------------------------------------------------- Enemy ASW was much improved over previous encounters, with apparent improved sound equipment and depth charges. Depth Charge Attack No.1 -------------------------------------------- 1944-03-23 After Torpedo Attack No.1, the escorting Momi Class Destroyer (now a DE) conducted a aggressive and persistent attack, headed by a skilled Captain and crew. Almost immediately after torpedo impact revealed CISCO's presence, the escort pinged and located CISCO, rushing in. This prevented CISCO from obtaining desired deep submerged prior to first salvo of depth charges, forcing her to endure the barrage at "shallow" depth of 350 ft. Attack continued for several hours, with CISCO reaching depth of 675 ft in order to escape. Enemy remained in area throughout the day, with air patrols assisting. This prevented CISCO operating in area as planned. Depth Charge tally for this attack: 105 Evasion was fairly standard for CISCO was depth, course, speed changes, and "bursts" of speed when enemy was above or nearby conducting depth charge run. Depth of 675 ft in this instance seemed to cause enemy to lose sonar contact. Enemy vessels are absolutely believed to now be equipped with a more advanced and powerful depth charge. Depth Charge Attack No.2 ----------------------------------- 1944-03-30 Two contacts tracking east of Palau turned out to be a patrol of one DD and one Subchaser. As APR-1 did not detect enemy radar signals during entire approach, it is believed enemy had radar set switched off. Low visibility due to clouds and fog at night prevented timely visual identification. When Cisco was at 4500 yards roughly from lead vessel, APR-1 detected radar emissions from the contacts bearing. Suddenly, gunfire erupted with shell splashes landing close to CISCO. This prompted a quick dive to avoid. Enemy pinging and attack began soon after. As a dedicated ASW patrol, both vessels were obviously manned by skilled crews with best equipment, making evasion a challenge. CISCO went to 675 ft once again to escape. While enemy active sonar ceased, it appeared they maintained some type of hydrophone contact as stayed quite close to CISCO dropping many charges. Most detonated well above, but boat was shaken and some minor damage occurred from shockwaves at such depth. Evasion consisted of course, speed, and depth changes, as well as submergence to 675 ft. Depth Charge tally for this attack was 171. Airborne ASW ------------------- Enemy aircraft in the Palau area were effective ASW patrols, forcing multiple dives and bombing CISCO multiple times. One low flying BETTY at dawn on 1 April, managed to fly in to just 6000 yards before detection, dropping 3 depth charges/bombs along side CISCO as she submerged, causing heavy damage and requiring return to port to terminate patrol. Multiple enemy aircraft were equipped with radar and APR-1 typically detected radar emissions before SD contact was made. Some enemy aircraft appeared to turn radar on and off at intervals, likely aware we may have radar detection equipment. MAJOR DAMAGE AND DEFECTS -------------------------------------- All damage repaired at sea unless otherwise noted. Depth Charge Attack No.1 -------------------------------- 1944-03-23 1. Compressor 2. Leaks in Forward Torpedo Room 3. Leaks in Control Room 4. Leaks in Conning tower. 5.Light bulbs 6.Glass fixtures 7.High Pressure Air Lines. Depth Charge Attack No.2 -------------------------------- 1944-03-30 1.Flooding-Forward Torpedo Room. 1 ft water. Pumped out. 2.Forward Dive Planes Transmission 3.Torpedo Tube No.6 4.Compressor 5. Hydraulic Pump 6.No.2 Electric Motor 7. No.4 Electric Motor 8. Leak-Flooding Forward Engine Room. 1/2 ft water pumped out. 9. Stern Dive Planes Transmission-Temporarily disabled. 10. High Pressure Air line leaks in conning tower and control room. 11. Piping leaks in all compartments. 12. Light bulbs 13. Glass fixtures. Bombing by Aircraft on 1 April 1944 ------------------------------------------- 1.Flooding Forward Torpedo Room 2.Flooding Conning Tower 3. Flooding Control Room 4. Flooding Crew Berthing 5. Flooding Forward Engine Room 6. Flooding Aft Engine Room 7. Flooding Stern Torpedo Room. 8. Trim Pump Disabled-Unable to repair at sea. 9. Hydraulic Pump disabled temporarily. 10. Hull damage-Conning Tower and Control room compartments. (Registered at 40 percent) 11. Aft Batteries severely damaged. Unable to completely repair at sea Batteries would not recharge beyond 73 percent for duration of patrol. 12. JP Sonar disabled temporarily. Repaired, but did not regain full function for duration of patrol. 13.No. 1 Diesel 14. No.3 Diesel 15. No.1 Electric Motor 16. No.2 Electric Motor 17.Rudder Transmission 18. High Pressure air line leaks in all compartments 19. Piping leaks in all compartments. 20. Lightbulbs 21. Glass fixtures. 22. Fuel leak. While capacity remained sufficient for trip to Brisbane fuel was burned faster than should at given speed, a small, slow leak was discovered. No material defects outside of battle damage. MINES ------- 1944/04/06 0227 10-46S 152-5E Spotted floating mine in Jomard Pass, detonated with 20mm gunfire. RADAR ------- SJ SJ radar performance was again overall excellent. Typical detection range on contacts was 28000-29000 yards. PPI scope again proved a real asset. A curious exception to the performance was failure to detect a surfaced enemy submarine (Torpedo Attack No.2). Check of equipment showed performing well. Low profile of enemy boat appeared enough to evade SJ detection. SD SD performance was normal, with typical detection range around 13000 yards. As always, low flying aircraft were not always detected. This lead to a bombing at dawn on1 April that caused heavy damage to CISCO and termination of patrol. RADAR COUNTERMEASURES -------------------------------------- APR-1 typically detected enemy radar emissions around 10-12 nautical miles, depending on conditions. SOUND GEAR AND SOUND CONDITIONS ------------------------------------------------- Performance of JP listening gear was overall excellent with contacts detected at 15,000 plus yards, and precise tracking possible in most conditions at 10000 yards or less. Performance declined for duration of patrol after damaged by aircraft attack. THERMAL LAYERS -------------------------- One thermal layer was detected during Depth Charge Attack No.1 at 201 ft. RADIO -------- Radio performance was normal and satisfactory. TORPEDO PERFORMANCE --------------------------------- Performance of the new MK 23 torpedo was excellent with no known malfunctions. These torpedoes sunk a tanker, submarine, and severely damaged at cargo vessel. Using Contact only detonators without Magnetic Influence has proven to drastically increase torpedo performance on last two patrols. LIFEGUARD OPERATIONS ------------------------------------ Lifeguard operations were conducted in support of Operation Desecrate I, strikes on Palau (30 March) and Yap (31 March). Lifeguard Station No.1 10 NM East of Palau Lifeguard Station No.2 10 NM NNE of Yap Rescues ----------- NO.1 DATE 1944/03/30 TIME 0850 LAT 7-15N LOG 134-37E TYPE: Raft-Aircrew RESCUED Ens. R.F. Verlig, USNR. VB-17, Bunker Hill CV-17 ARM2c C.T. Foster, USN. VB-17, Bunker Hill CV-17 Remark. Downed in mid-air collision. No.2 DATE 1944/03/30 TIME 0908 LAT 7-15N LOG 134-37E TYPE: Aviator in life preserver. RESCUED LT. I.H. Macone, USN. VF-31,Cabot CVL-28 Downed in mid-air collision. No.3 DATE 1944/03/30 TIME 1304 LAT 7-15N LOG 134-37E TYPE: Aviator in life preserver. RESCUED LT (jg) J.F. Halacre, USN. VF-23, Princeton CVL-23. Shot down by AA fire. Rescued 3 NM SSE of Peleliu. No.4 DATE 1944/03/30 TIME 1905 LAT 9-27N LOG 138-17E TYPE: Raft RESCUED Ens. P.C. Potter, USN. VT-16, Lexington CV-16 LT (jg) T.Y. Jones, USNR. VT-16, Lexington CV-16 AARM3/c G.G. Poznyck, USN. VT-16, Lexington CV-16 REMARK TBF hit by AA fire over Yap at 1141, ditched when engine quit just after bomb run. No.5 DATE 1944/03/30 TIME 1915 LAT 9-26N LOG 138-23E TYPE: Aviator in life preserver. RESCUED LCDR L.C. Huntley, USN. VF-12, Hornet CV-12 REMARK F6F caught fire after AA hit while strafing AA positions in support of SB2C strikes at 1540. Lost raft in bail out. Ankle sprained, treated by PhM. Full recovery expected. No.6 DATE 1944/03/30 TIME 2001 LAT 9-25N LOG 138-27E TYPE: Two aviators in water together. RESCUED LT. A.Z. Powell, USN. VB-10, Enterprise CV-6 CDR T.B. Bontier, USNR. Enterprise CV-6 REMARK SBD hit by AA fire over Yap. Attempted to make it back to ship, engine failed. CDR Bontier member of staff, along as radio/observer/gunner in lieu of usual man. Rafts lost in bail out Bailed out at 1131. PERSONNEL ---------------- Crew performance on this busy and trying patrol was excellent. Underway routine included schools for Qualification and Advancement. Two new Officers, both Reservists were on board for their first patrols and performed well. Both qualified as Assistant Officers of the Deck. Officers:8 Qualified:6 Chief Petty Officers: 8 Qualified:8 Men: 64 Qualified:42 Men Qualified during patrol: 5 Men Advanced in Rating: 8 Total Aboard: 80 Average Age: 21 HEALTH AND HABILITABILITY ------------------------------------- Habitability of the boat was overall excellent. Meals were well prepared. After a severe jolt and damage by air attack, repairs were made and boat was cleaned up in short order, much as possible while at sea. Health of crew was overall excellent. Fortunately, only minor injuries consisting of scrapes and bumps occurred from attacks. Two men in after torpedo were treated for combat fatigue and returned to watch, but detached upon return to Brisbane. MILES STEAMED-FUEL CONSUMED ---------------------------- Brisbane to Milne Bay Miles: 1090 miles Gallons: 15050 Milne Bay to Area Miles:1435 Gallons:23250 In Area Miles:5000 Gallons:44200 Area to Lifeguard Station No.1 Miles:200 Gallons:1500 Lifeguard Station No.1 to Lifeguard Station No.2 Miles:200 Gallons:3650 Lifeguard Station No.2 to Area Miles:550 Gallons:5400 Area to Brisbane Miles:2550 Gallons:39200 DURATION OF PATROL -------------------- Brisbane to Milne Bay Days: 4 Milne Bay to Area Days:5 In Area Days: 15 Area to Lifeguard Station No.1 Days:.5 On Lifeguard Station No.1 Days:1 Lifeguard Station No.1 to Lifeguard Station No.2 Days:.5 On Lifeguard Station No.2 Days:1 Lifeguard Station No.2 to Area Days:1 Area to Brisbane Days:9 FACTORS IN ENDURANCE -------------------- Torpedoes 14 Fuel 42200 gallons Provisions 52 days Crew Indefinite Major factor in termination of patrol: Battle damage-Heavy. REMARKS ------------ A successful but challenging patrol cut short by unexpected heavy damage from air attack. Ten downed aviators and crew rescued in lifeguard operations are considered the highlight of this patrol, even with the sinking of a tanker and enemy submarine, in addition to severely damaging a merchant vessel. CISCO's Balao Class design proved quite tough, standing up to operations at extreme depths while being depth charged severely. Survival of the air attack given the close proximity of the air dropped depth charges/bombs is a testament to stout construction. Performance of SD radar versus low flying aircraft is ongoing issue of concern, which led to the heavy damage suffered on this patrol. As such, it is hoped the SD is improved in order to prevent such incidents in the future. J.W. Coe

06-02-22, 09:34 PM	#5271
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	USS Cisco SS-290 4th War Patrol Screenshots

06-04-22, 05:09 PM	#5272
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	USS CISCO SS-290 Fifth (and final) War Patrol 31 May-28 June 1944 TMO Update BH V2.0 100 difficulty. Cams and map contacts off. War Patrol Report USS CISCO SS-290 Fifth War Patrol May 31-June 27,1944 PROLOGUE ---------- Arrived Brisbane, Australia from Fourth War Patrol on April 9, 1944. Inspection of battle damage commenced immediately with repairs commencing soon after. Entered drydock for hull repairs 25 April-6 May. New Trim and Hydraulic Pumps installed. These pumps are said to be quieter than predecessors. New stern batteries installed. Four inch inch forward deck gun removed, replaced with new Five Inch Twenty-Five Caliber "Wet Mount" gun. Aft 20mm removed, replaced to 40mm Bofors cannon. LT (jg) R.M. Greco, USN., and Ensign George S. Gruss, USN., reported aboard 14 and 16 May. All repairs and refit completed by 20 May. Conducted at sea training May 21-25. Loaded twelve MK 14-3A torpedoes, Four MK 23-1 torpedoes into forward torpedo room. Loaded eight MK 18-1 torpedoes and four MK 14-3A torpedoes in aft torpedo room, along with all required provisions 26-30 May. Ready for sea May 31, 1944. NARRATIVE ------------ May 31 ---------- 0900 Underway from Brisbane, Australia en route Area BRIAR PATCH per CTF-72 Operation Order 49-44. 1030 Rendezvoused with escort for transit through minefield. 1131 Trim Dive 1155 Surfaced 1200 Set course for assigned area via Jomard Pass and Manus Island. June 2 --------- En route Manus Island. Conducted dive, gunnery, torpedo fire control, and emergency drills. June 3 --------- En route Manus Island, conducted drills. June 4 ---------- En rote Manus Island 1400 Transited Vitiaz Strait Northbound. 1411 SJ contact 023 27000 yards (Ship Contact No.1) 1425 Two USN DD's on patrol. June 5 ----------- 1130 Rendezvoused with escort outside Seeadler Harbor, Manus Island. 1300 Moored alongside tender at Seeadler Harbor,Manus Island to top off fuel and provisions. 1800 Departed Seeadler Harbor, Manus Island for patrol area. June 6-9 ---------- En route patrol area. June 10 ---------- 1200 Entered assigned area, BRIAR PATCH. June 11 ---------- Patrol in area. June 12 ----------- Patrol in area. 1902 SJ contact bearing 359 28400 yards (Ship Contact No.2) 1920 Spotted two DE types on patrol. Avoided. June 13 ----------- 1311 APR-1 detected radar emissions 070. Likely aircraft. Submerged to avoid. 2130 Surfaced. June 14 ----------- Patrol in area. June 15 ----------- 0000 Closed in to North End of San Bernadino Strait for close in patrol per operation order. Enemy forces likely to sortie in response to FORAGER (landings on Saipan) may exit via the strait. 0624 APR-1 detected radar emissions. Judged to be aircraft, submerged. 0625 Explosions above, not close as CISCO passed 71 ft.. Seems contact was a low '] flying plane on pre dawn patrol. SD did not detect, not did lookouts. Given apparent close proximity of contact, APR-1 saved the boat. 0630 Continued on for submerged patrol in North end of San Bernadino Strait, to cover per operation order in case of enemy fleet sortie via the strait in response to FORAGER. 0900 Weather turned foul. Overcast, light fog winds 29 kts direction 285. 1449 Sound contacts. Many fast and heavy props bearing 000 long range. (Ship Contact No.3) 1453 SJ contacts bearing 355 28200 yds.(Ship Contact No.3) 1505 GENERAL QUARTERS-TORPEDO 1530 Contact Report sent to CTF-72. Serial 03440615-01 Convoy Sighted. 12-58N 124-23E Course 045 Speed 20 kts CVx3,BBx2,CAx2,CLx2, DDx10+ 1533 Due to tight screen in a "ring" by DD's, unable to get in close without detection. Opted for long range shot, torpedoes set to low power. (Torpedo Attack No.1) 1538 Tubes 1,2,3,4,5,6 made ready to fire. 1541 Fired tubes 1,2,3,4,5,6 at CV (Believed to be TAIHO). Range 5701 yds. Torpedoes fired through gap in screen on port side. 1544 Torpedo impact on a CA, amidships. 1545 Three torpedo impacts on TAIHO CV. Large fires visible 1545: One torpedo impact on BB, possible NAGATO class in second column! 31 1546 CV slowed visible list to port, three large fires burning. Several secondary explosions. 1545: DD's rushing in, pinging. Rigged for depth charge and silent running. 27 1546 Torpedo impact! Torpedo heard hitting unknown vessel as CISCO passed 125 ft. Large explosions heard. 1547 DD above pinging. Splashes 1548 As CISCO passed 400 feet, DC explosions. 1549 Another DD above, more DC explosions, close, boat shaken. 1552 Massive explosions audible from last bearing of CV TAIHO. 1554 Pinging, DD had solid contact on CISCO at 500 ft. 1555 Large pattern of depth charges, boat severely shaken. Damage reported. Leaks in forward torpedo room. 1558 More explosions from last bearing of CV. 1601 CISCO at 525 ft. Two DD's made runs. 1602- Large patterns of depth charges, CISCO shaken, more 1603 damage reported. Leaks previously contained in forward torpedo were now leaking again, causing flooding. 1605 Multiple large explosions from CV bearing followed by "death noises". CV TAIHO believed sunk. 1610 Flooding controlled, water in compartment, bow slightly heavy, compensated with speed. 1611 A period of near constant pinging from multiple DD's began. They appeared to be circling CISCO. 1617 Large DC pattern, boat shakes, damage reported. CISCO at 545 ft. We were surprised by ability of enemy DD's to maintain contact in such terrible sound conditions. 1618 More depth charges, close. Boat shaken, minor damage. 1620 More DC explosions, not close. 1621 Pinging stopped, lost contact with nearby DD's, believe were listening. 1623 Large explosions from area of CA hit during attack. 1630 Two DD's roared to life one ahead, one aft raced above CISCO dropping large patterns of depth charges above and along the port side. 1631 Many DC explosions, several close, heavy damage reported. 1632 Flooding in control room, Engine rooms. 1633 Conning tower heavily damaged by DC exploding very close. Executive Officer LCDR J.B. Butler severely injured (health fell to 15 percent) At the helm, Chief Signalman G.C. Carter seriously injured (health went to 30 percent) 1634 Conning tower abandoned and sealed off due to damage and flooding. 1634 CISCO sinking, secured silent running, ordered speed to comepsante and full rise on planes Damage Control Party assigned. 1635 More explosions. DC's, more damage reported in aft torpedo room. 1641 Managed to rise to 450 feet while battling flooding and other damage. 1644 More DC's, close. 1645 Pinging stopped, enemy dropping DC's around appeared to have lost contact. 1654 Several DD's heard departing area high speed to join the task force However, soon found out two were left behind to keep CISCO pinned down. 1702 CISCO at 410 feet , fighting to hold depth, battling flooding. Suddenly DD roared above pinging, dropping depth charges. One depth charge bounce off of the deck aft of conning tower and exploded below CISCO, causing severe damage. Hull damage went to 40 percent. Every piece of equipment on boat had some level of damage. Port prop shaft destroyed, aft battery damage at 94 percent. Conning tower flooded and abandoned. Aft torpedo tubes destroyed. Hydraulic pumps knocked out. Compressor destroyer. Stern dive planes transmission destroyed.Rudder transmission heavily damaged. No.1 and No.3 diesels disabled, could not repair at sea.With all damage, a battle surface was seriously considered, but some flooding had been contained thanks to valiant efforts of damage control party and some amount of depth control restored, but battery power was draining fast. 1730 After a few more runs, the enemy, for unknown reasons, gave up, two were heard departing the area at high speed. However, wary one maybe had been left behind to listen. CISCO continued to hold depth at 360 ft. 1840 Conning tower pumped out. 1930 Battery power nearly exhausted. Close to dark, surfaced and manned guns in case needed, but no enemy was around. CISCO surfaced into flat calms seas and clear dusk skies. Most likely reason for the effective enemy attack aside from first rate destroyers and crews, was after going deep following the attack, weather topside cleared providing ideal sound conditions for the enemy. 2000 CISCO was in shambles and ineffective. A message was sent to CTF-72 and set course for Manus Island to terminate patrol. 2030 Located large debris field, likely site where carrier TAIHO sunk. June 16 ---------- En route to Manus Island. With two diesels knocked out along with port prop shaft surface speed was limited to 9.5 kts. 0655 Aircraft spotted bearing 044 8000 yards closing! Dive! Dive! (Aircraft Contact No.4) SD did not detect aircraft. 0656 As CISCO passed 75 feet, several large explosions rocked the boat causing severe damage. Notably heavy bulkhead hull damage in aft torpedo room and flooding. Hull damage on boat went to 75 percent. All four stern torpedo tubes destroyed. Rudder and Stern planes transmissions disabled, again. Boat leveled at 100 feet. More explosions heard but aircraft did not have CISCO. Repairs completed and stayed at 80 feet until night fall. 2030 Surfaced, headed for Manus. All AA gunners would be on standby during daylight hours. See DAMAGE AND DEFECTS for full damage report. June 17-27 ------------- En route Manus Island. Did not submerge for remainder of transit due to hull damage. June 28 ------------ 0800 Arrived Manus Island. Terminated war patrol. WEATHER --------- Weather was normal for the assigned area with mostly yachting weather, punctuated by occasional squalls. CONTACTS ----------- Aircraft -------- No.1 DATE 1944/06/15 TIME 0624 LAT 13-0N LOG 124-28E BRG 090* RNG -- ALT -- SPD -- CRS -- TYPE -- HOW APR-1 REMARK Explosions after diving, bombed by unknown aircraft. No.2 DATE 1944/06/15 TIME 1446 LAT 12-53N LOG 124-22E BRG 139 RNG 9500 yds ALT 1000 ft SPD 150 kts CRS 090 TYPE Single engine floatplane. Possibly DAVE. HOW Visual-Periscope REMARK Low flying ASW patrol. Possibly sweeping ahead of TF exiting San Bernadino Strait. No.3 DATE 1944/06/16 TIME 1446 LAT 12-04N LOG 127-0E BRG 044 RNG 8000 yds ALT 500 ft SPD 230 kts CRS 090 TYPE G4M BETTY HOW Visual only REMARK Bombed by contact, severe damage. Ships --------- No.1 DATE 1944/06/04 TIME 1411 LAT 6-1S LOG 148-12E BRG 023 RNG 27000 yds CRS 023 SPD 16 kts TYPE DD,DD HOW SJ,Visual REMARK Patrol in Vitiaz Strait No.2 DATE 1944/06/12 TIME 1902 LAT 13-30N LOG 125-10E BRG 359 RNG 28400 yds CRS 240 SPD 16 kts TYPE DE,DE HOW SJ,Visual,APR-1 REMARK Enemy patrol in area. APR-1 detected radar emissions. No.3 DATE 1944/06/15 TIME 1449 LAT 13-0N LOG 124-24E BRG 000 RNG 15000+ yds(sound) (28200 SJ) CRS 045 SPD 20 kts TYPE CV,CV,CV,BB,BB,CA,CA,CL,CL,10+DD HOW Sound(JP),SJ,Visual REMARK Torpedo Attack No.1 CV sunk. CISCO heavily damaged by depth charge. ATTACKS --------------- USS CISCO SS-290 TORPEDO ATTACK NO.1 WAR PATROL NO.5 DATE: June 15, 1944 TIME: 1541 LAT:13-0N LOG:124-24E ------------------------------------------------ TYPE OF ATTACK Submerged-Periscope-Day SHIPS SUNK CV TAIHO 35000 tons Verification: Observed three torpedo hits on CV. Observed large fires and explosions plus heavy list to port prior to going be low periscope depth. Repeated explosions and breaking up noises heard over 30+ minute period from last known bearing of CV. Large debris field discovered upon surfacing. SHIPS PROBABLY SUNK None SHIPS DAMAGED BB-Nagato Class 32,700 tons Verification: Observed a torpedo impact forward under No.2 turret. Smoke and fire visible. CA Takao Class Verification: Observed one solid torpedo hit amidships. Large hole visible below waterline when ship rode heavy seas. Fires and list visible. SHIPS PROBABLY DAMAGED One unknown vessel damaged by torpedo hit. Verification: After going below to periscope depth to evade enemy destroyers, a torpedo impact was clearly audible. Target likely a destroyer on opposite side of screen. TARGET DATA (at firing) -------------------------------- CLASS CV NAME TAIHO TONS 35000 DRAFT 31.2 ft MAST 150.9 ft CRS 045 SPD 20 kts AOB 59 P RNG 5701 yds BRG 036 TRUE BRG 167 REMARK CV sunk TORPEDO FIRE CONTROL DATA (at firing) ------------------------------------------------ TUBE NO.1 TYPE MK 14-3A SERIAL NO.44500 EXPLODER MK 6-4 SERIAL NO.30700 GYRO 02 R COURSE 133 TRACK 94 P METHOD Single bearing SPREAD Divergent INTERVAL 5 seconds POWER Low DEPTH 12 ft POA MOT* ACTUATION Contact HIT Yes POI MOT ERRATIC No MALFUNCTION No REMARK Torpedo hit CA instead of CV TUBE NO.2 TYPE MK 14-3A SERIAL NO.44501 EXPLODER MK 6-4 SERIAL NO.30701 GYRO 02 R COURSE 133 TRACK 94 P METHOD Single bearing SPREAD Divergent INTERVAL 5 seconds POWER Low DEPTH 12 ft POA MOT ACTUATION Contact HIT Yes POI MOT ERRATIC No MALFUNCTION No REMARK Hit on CV Taiho TUBE NO.3 TYPE MK 14-3A SERIAL NO.44502 EXPLODER MK 6-4 SERIAL NO.30702 GYRO 02 R COURSE 133 TRACK 94 P METHOD Single bearing SPREAD Divergent INTERVAL 5 seconds POWER Low DEPTH 12 ft POA MOT ACTUATION Contact HIT Yes POI Aft ERRATIC No MALFUNCTION No REMARK Hit on CV TAIHO TUBE NO.4 TYPE MK 14-3A SERIAL NO.44502 EXPLODER MK 6-4 SERIAL NO.30702 GYRO 02 R COURSE 133 TRACK 94 P METHOD Single bearing SPREAD Divergent INTERVAL 5 seconds POWER Low DEPTH 12 ft POA MOT ACTUATION Contact HIT Yes POI Aft ERRATIC No MALFUNCTION No REMARK Hit on CV TAIHO TUBE NO.5 TYPE MK 14-3A SERIAL NO.44504 EXPLODER MK 6-4 SERIAL NO.30704 GYRO 02 R COURSE 133 TRACK 94 P METHOD Single bearing SPREAD Divergent INTERVAL 5 seconds POWER Low DEPTH 12 ft POA MOT* ACTUATION Contact HIT Yes POI Forward under No.2 turret ERRATIC No MALFUNCTION No REMARK Torpedo missed CV, hit BB. TUBE NO.6 TYPE MK 14-3A SERIAL NO.44505 EXPLODER MK 6-4 SERIAL NO.30705 GYRO 02 R COURSE 133 TRACK 94 P METHOD Single bearing SPREAD Divergent INTERVAL 5 seconds POWER Low DEPTH 12 ft POA MOT ACTUATION Contact HIT Yes POI -- ERRATIC No MALFUNCTION No REMARK Missed CV, later hit unknown target. OWN SHIP DATA (at firing) -------------------------- DEPTH 58 ft COURSE 050 SPEED 3 kts ANGLE 2-down SEA STATE Heavy REMARK MAJRO DAMAGE AND DEFECTS --------------------------- CISCO suffered severe damage from depth charge attack and aerial bombing. Depth Charge Attack No.1 June 15, 1944. ------------------------- Damage repaired at sea unless otherwise noted. 1. Hull damage-40 percent-Unable to repair at sea. 2. Conning tower bukhead severely damaged. Flooded out, abandoned during attack. 3. Port Prop Saft damaged beyond repair at sea. 4. No.1 Diesel Engine damaged beyond repair at sea. 5. No.3 Diesel Engine damaged beyond repair at sea. 6. Aft Batteries damaged severely. Boat held just a 55 percent charge duration of patrol. 7. SJ Radar Antenna destroyed. 8. SD Radar Antenna damaged. 9. Flooding in all compartments-Water pumped out. 10.Hydraulic pumps damaged. 11. JP sonar disabled. Repaired. 12. Compressor destroyed. 13. Fuel leak 14. Stern dive planes transmission disabled-repaired at sea. 15. Stern tubes disabled-Repaired, later destroyed in air attack. 16. Piping and air line leaks in all compartments. 17. Lightbulbs-Glass fixtures, gaugesall compartments. 18. Compressed air reserve drained to 35 percent. Unable to replenish due to loss of compressor. Aerial Attack June 16, 1944 ---------------- Several depth charges/bombs dropped by plane at dawn as CISCO passed 75 ft. Exploded below stern. 1.Hull damage up to 80 percent. 2. Bulkhead damage stern torpedo. Flooding. Pumped out 3 ft of water. 3. Stern tubes destroyed-Unable to repair at sea. 4. Stern planes transmission knocked out. 5. Rudder transmission knocked out. Repaired but boats turning remained sluggish rest of patrol. Upon arriving at Manus Island, CISCO was ruled a total constructive loss and unfit for operations, including submerging. Thus, CISCO has made her final dive. After voyage repairs, CISCO was routed to Mare Island, CA to await further disposition. Last edited by Bubblehead1980; 06-04-22 at 05:17 PM.

06-01-22, 12:34 PM	#5268
ConvoyHunting Watch Join Date: Oct 2021 Posts: 27 Downloads: 8 Uploads: 0	Bubblehead1980, excellent patrols and reports as usual. Keep up the good work and remains agressive !

06-08-22, 03:54 AM	#5273
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	Flower Corvette coming in to ram during night surface attack!

06-09-22, 01:43 PM	#5275
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	U-48 First Patrol screenshots Merchant trying to ram me while I was inside convoy on surface. Range about 1200 meters. In the heavy seas, I was just barely able to get out of the way.

06-11-22, 10:30 AM	#5276
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	U-48 Second Patrol November 11, 1939-January 1, 1940 Kriegstagebuch of the Kommandanten of "U-48" for the period from 11.11.1939-20.01.1940. Kommandant: Oberleutenant zur See Marche 11.11.39 09.45 Departed Wilhelmshaven for patrol. ---------- 17.40 Test Dive. Sea State: 1 12.11.39 Transit to Area. ---------- Sea State: 0 13.11.39 Transit to area. Uneventful. ---------- Sea State: 0 14.11.39 Transit to area. Uneventful. ---------- Sea State: 1 15.11.39 Transit to area. Uneventful. ---------- Sea State: 2 16.11.39 Transit to area. Uneventful. ---------- Sea State: 2 17.11.39 Transit to area. Uneventful. ---------- Sea State: 2 18.11.39 00.00 Arrived in assigned Grid AM 52. ---------- Sea State: 2 19.11.39 Patrol in area. ---------- Sea State: 2 04.32 Ship spotted bearing 039 9000 meters Turned to intercept. 04.35 Spotted second contact. Both identified as 330 ton steam trawlers. Decided to shadow until dawn for gun attack. 08.10 Submerged to inspect visually at dawn prior to gun attack. 08.30 Surfaced for gun action. 08.32 Opened fire on trawlers from 1500 meters with High Explosive rounds. 08.42 Steam Trawler No.1 sunk by gunfire. Grid AM 52 08.45 Steam Trawler No.2 sunk by gunfire. Grid AM 52 08.47 Secured from action stations. Resumed patrol. 20.11.39 Patrol in Area.Unventful. ----------- Sea State: 4 21.11.39 Patrol in Area.Unventful. ----------- Sea State: 4 22.11.39 ----------- Sea State: 4 00.00 Received orders to patrol Grid AE 695. Set course for new grid. 23.11.39 Transit to new grid..Unventful. ----------- Sea State: 4 24.11.39 Patrol in new grid AE 695.Unventful. ----------- Sea State: 5 25.11.39 Patrol in new grid AE 695.Unventful. ----------- Sea State: 5 26.11.39 Patrol in new grid AE 695.Unventful. ----------- Sea State: 5 27.11.39 Transit to original grid.Unventful. ----------- Sea State: 5 28.11.39 Transit to grid.Unventful. ----------- Sea State: 4 29.11.39 Patrol in grid.Unventful. ----------- Sea State: 4 30.11.39 Patrol in grid.Unventful. ----------- Sea State: 0 01.12.39 Patrol in grid.Unventful. ----------- Sea State: 0 02.12.39 Patrol in grid.Unventful. ----------- Sea State: 0 03.12.39 Patrol in grid.Unventful. ----------- Sea State: 0 04.12.39 Patrol in grid.Unventful. ----------- Sea State: 0 05.12.39 Patrol in grid.Unventful. ----------- Sea State: 0 06.12.39 Patrol in grid. ----------- Sea State: 0 13.59 Aircraft Spotted bearing 163! Alarm! Dive! (Aircraft No.1) 14.00 Leveled at 45 meters. 18.20 Surfaced. 07.12.39 Patrol in grid. ----------- Sea State: 2 15.41 Aircraft spotted bearing 200! Alarm! Dive! (Aircraft No.2) 15.42 Passed 40 meters, several large explosions. No damage. 18.50 Surfaced. 08.12.39 Patrol in grid.Unventful. ----------- Sea State: 2 09.12.39 Patrol in grid.Unventful. ----------- Sea State: 2 10.12.39 Patrol in grid.Unventful. ----------- Sea State: 4 11.12.39 Patrol in grid.Unventful. ----------- Sea State: 4 12.12.39 Patrol in grid.Unventful. ----------- Sea State: 4 13.12.39 Patrol in grid AM 619 off Barra Head. ----------- Sea State: 4 08.18 Submerged for patrol. 18.45 Surfaced. 14.12.39 Patrol. ----------- Sea State: 4 10.40 During dive for sound sweep, detected screws bearing 010 long range. Began to close bearing. 11.04 Periscope observation. Spotted smoke bearing 000 15 km. Set intercept course. 11.30 Action stations! 11.55 Fired Tube No.1 Torpedo missed for uknown cause. 11.57 Fired Tube No.2 Missed, target slowed. 11.59 Fired Tube No.3 Missed, unknown cause. 12.01 Fired Tube No.4 Missed unknown cause. 12.08 Reloaded Tube No.1. Fired T1 12.09 Torpedo impact! 12.19 Fired Tube No.2 12.20 Torpedo impact! 12.21 Vessel crippled, burning, listing. 12.28 Massive boiler explosions. Vessel split into. 12.31 4,200 ton cargo vessel, British flagged sunk Grid AM 53. 12.33 Distant sound contact heard bearing 353. Surfaced, set course to intercept. 12.39 Spotted two vessels, unidentified. Closing. Returned to Action Stations. 12.45 Four contacts, possible warships. Course 126 Speed 11 kts. Contact Report sent to BdU. 13.00 Orders to pursue and attack. 13.26 Targets made zig to East.Heading right for our position. 13.27 Submerged for attack. 13.40 Contact is four ASW type patrol craft/armed trawlers, closing fast! 13.41 Rigged for Depth Charge and Silent Routine. 13.45 Ordered 45 meters depth.Bottom is at 75 meters. 14.00 Enemy passed above. Believeheavy seas helped to thwart their search efforts. 14.30 Secured Action Stations. Maintained Silent Routine. 19.00 Surfaced. 14.12.39 Patrol. ----------- Sea State: 4 15.12.39 Patrol. ----------- Sea State: 3 16.12.39 Patrol.Unventful. ----------- Sea State: 3 17.12.39 Patrol.Unventful. ----------- Sea State:0 18.12.39 Patrol.Unventful. ----------- Sea State:0 19.12.39 Patrol.Unventful. ----------- Sea State:0 20.12.39 Patrol area. Uneventful. ---------- Sea State: 0 21.12.39 Patrol area. Uneventful. ---------- Sea State: 0 22.12.39 Patrol area. ---------- Sea State: 0 06.05 Received contact report on Large Convoy on Easterly Course at 7 knos. Plotted intercept set course at best speed. 09.12 Submerged for sound search. 09.14 Sound contact distant bearing 031. 09.16 Surfaced to close contact. 10.12 Convoy sighted Grid AM 5654 Course 090 Speed 7 kts Contact Report sent. 10.13 Action Stations! 11.34 Fired tube 6 at 6000 ton merchant. 11.36 Torpedo missed. Turned for bow shot. 11.41 Fired tubes 1,2,3 spread at center column. 11.47 Two torpedoes impacted 7470 ton merchant in next column. Ship exploded and sunk in three minutes. 11.53 Torpedo reload completed. Tube 1 and Tube 6 11.54 Periscope raised. Observed large merchant 400 meters bearing 090 turned to ram our scope. Alarm! 25 meters! 11.56 Pinging began. 11.58 Periscope depth. Destroyer 1800 meters closing fast bearing 120. Rigged for depth charge and silent routine. 12.00 Destroyer above, splashes. 12.00: At 100 meters. Depth charge explosions, above. 44 12.26 Enemy continues to set charges too shallow. Boat depth 176 meters. 13.30 Temporary loss of depth control after depth charges above Descended from 176 meters to 211 meters before regaining control. 13.38 169 meters. Enemy appeared to have lost contact at 200 meters depth. 20.00 Surfaced after dark. Set pursuit course of convoy while recharging batteries and moving external stern torpedo into torpedo room. 23.12.39 Pursuit of convoy. ---------- Sea State: 0 14.00 Reversed course as believed likely ahead of convoy if zigged. 16.45 Submerged for sound sweep. 16.48 Sound contact, many screws, very distant at bearing 340-350. 16.50 Surfaced to close contacts. 17.14 Spotted smoke bearing 010 logn range! 17.34 Contact is large vessel moving at high speed course 100 17.40 Unable to overtake target. Chose to fire from astern of target. 17.48 Fired torpedo Tube No.1. All bow torpedoes expended. 17.50 T1 G7a Torpedo missed, cause unknown. 17.53 Opened fire with deck gun. 18.00 Vessel dead in water, sinking. 18.05 5975 ton British merchant vessel sunk by gunfire Grid AM 53 18.10 Secured Action Stations. Departed area. 24.12.39 Patrol in Grid AM 378 West of Hirta Island. ---------- Sea State: 0 21.04 Aircraft 180 very short range ! Alarm! Dive! Unidentified single engine aircraft appeared out of darkness and dropped several bombs/depth charges. Damage reported (see below). 21.05 Boat in uncontrolled dive, heavy forward due to flooding. Emergency procedures to stop descent, but hit bottom at 120 meters. Damage reported (see below). Damage from bombs/depth charges: 1. Flooding in bow torpedo compartment. 2. Bow Dive planes Transmission disabled. Damage from impact with sea floor: 1. Fore batteries severely damaged. Capacity reduced to 40 percent. 2. Additional flooding in bow torpedo room. 3. Hydraulic Pump 4. Trim Pump 5. Clean Fuel Oil Tank 6. High Pressure Air Compressor Injuries: Mostly minor. Matrosengefeiter M.H. Ritter seriously injured as was on watch topside when bombing occurred. 21.10 Ballast tanks blow with motors backing at full. 21.25 Surfaced. Repairs continued. 25.12.39 Continued repairs. ---------- Sea State: 5 Heavy Rains, Heavy Fog. Winds 30 kts, direction 340. 02.50 Batteries repaired. 04.45 Batteries recharged to 100 percent capacity. 26.12.39 Patrol. ---------- Sea State: 5 Heavy Rains, Heavy Fog. Winds 30 kts, direction 340. 27.12.39 Patrol. ---------- Sea State: 5 Heavy Rains, Heavy Fog. Winds 30 kts, direction 340. 28.12.39 Patrol. ---------- Sea State: 5 Heavy Rains, Heavy Fog. Winds 30 kts, direction 340. 29.12.39 Patrol.Storms cleared, heavy seas remained. ---------- Sea State: 5 Clouds partial with light fog.Winds 27 kts, direction 353. 29.12.39 Patrol. Position Grid AM 52. ---------- Sea State: 5 Clouds partial with light fog.Winds 27 kts, direction 353. 30.12.39 Patrol. ---------- Sea State: 5 Clouds partial with light fog.Winds 27 kts, direction 353. 31.12.39 Patrol. ---------- Sea State: 5 Clouds partial with light fog.Winds 27 kts, direction 353. 01.01.40 Patrol. ---------- Sea State: 5 Clouds partial with light fog.Winds 25 kts, direction 353. 02.01.40 Patrol Grid AM 55. Winds and seas calmed in area. ---------- Sea State: 0 Clouds partial with light fog.Winds 2 kts, direction 037. 03.01.40 Patrol. ---------- Sea State: 0 Clouds partial with light fog.Winds 2 kts, direction 037. 00.00 Ordered to Grid AM 35. Set course 045. 04.01.40 Patrol. ---------- Sea State: 0 Clouds partial with light fog.Winds 2 kts, direction 037. 05.01.40 Patrol in AM 35 ---------- Sea State: 0 Clouds partial with light fog.Winds 1 kt, direction 037. 06.01.40 Patrol. ---------- Sea State: 5 07.01.40 Patrol. ---------- Sea State: 5 08.01.40 Patrol. ---------- Sea State: 5 09.01.40 Patrol. ---------- Sea State: 5 10.01.40 Patrol. ---------- Sea State: 0 11.01.40 Patrol. Day 60 at sea. ---------- Sea State: 0 12.01.40 Set course for Wilhelmshaven. ---------- Sea State: 0 13.01.40 Transit to Wilhelmshaven. East of Shetland Islands. ---------- Sea State: 2 14.01.40 Transit to Wilhelmshaven. ---------- Sea State: 2 15.01.40 Transit to Wilhelmshaven. Patrol East of English Coast. ---------- Sea State: 2 15.18 Aircraft spotted! Bearing 358 6000 meters. Alarm! Dive! 45 meters! Depth under keel 70 meters. 15.19 Explosions above, not close. Boat at 45 meters. 18.30 Surfaced. 16.01.40 Transit to Wilhelmshaven. ---------- Sea State: 2 15.21 Received orders to send status report. 15.25 Status report transmitted to command. 17.01.40 Transit to Wilhelmshaven. ---------- Sea State: 0 11.20 Received radio report of enemy vessel in Grid AN 61 in North Sea. Set course in attempt to locate as had sufficient fuel and two eels remaining aboard. 18.01.40 Searched for enemy vessel. ---------- Sea State: 0 19.01.40 Resumed transit to Wilhelmshaven. ---------- Sea State: 0 20.01.40 ---------- Sea State: 0 13.30 Arrived Wilhelmshaven. Ships Hit ------------ 1. British Cargo Vessel. 4,200 tons 14.12.39 Sunk by torpedo 2. Unknown Cargo Vessel 6,960 tons 22.12.39 Sunk by torpedo 3. British Cargo Vessel 5975 tons. 23.12.39 Sunk by gunfire 4. British Steam Trawler 330 tons 11.11.39 Sunk by gunfire 5. British Steam Trawler 330 tons 11.19.39 Sunk by gunfire Matrosengefeiter M.H. Ritter seriously injured by aircraft bombing while on topside watch. Detached upon return to Wilhelmshaven to recover. Patrol duration: 69 days. Torpedoes Fired: 12/14 Fuel Remaining: 22 percent of capacity

06-11-22, 11:34 AM	#5277
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	U-48 second patrol screenshots Had external cam disabled on this one, so not as many screenshots. Ship in convoy sped up and turned toward my periscope to ram. A T1 G7a Torpedo missed its intended target in convoy, but went on to hit another, sinking it. Love how steam trawler's boilers explode, pretty cool effect.

06-12-22, 10:25 PM	#5278
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	Kriegstagebuch of the Kommandanten of "U-48" for the period from 24.02.-18.03.1940. Kommandant: Oberleutenant zur See Marche 24.02.40 Sea State: 1 --------- Weather: Clear 07.30 Departure from Wilhelmshaven. 13.42 Test Dive. 14.00 Surface. Set course for assigned patrol grid in Western Approaches. Chose to transit Strait of Dover and English Channel for transit to area. 25.02.40 Sea State: 1 --------- Weather: Clear 26.02.40 Sea State: 1 --------- Weather: Clear 10.00 Submerged in grid AN 887 for submerged approach to Dover Straits for night time transit. 17.08 Distant sound contact bearing 090, possible patrol vessel. 20.00 Surfaced for transit of Dover Strait. 22.00 Begin transit of Dover Strait. 23.08 Merchant vessel spotted bearing 334 8000 meters in Grid BG 1243 Southern end of Straits of Dover. Called Action stations for surface torpedo attack. 23.20 Vessel identified as 3800 ton M-KF-M (P) Merchant, British. Course 050 Speed 8 knots. 23.23 Flooded down to 7 meters. 21.25 Fired tube No.1 Torpedo missed.(TII G7e) 21.27 Fired tube No.2 Torpedo missed. (TII G7e) 21.29 Fired tube No.3 Torpedo prematurely detonated. (TII G7e) 21.38 Fired Tube No.4 (TII G7e) 21.40 Torpedo impact! Large fires and explosion 21.41 Surfaced, manned deck gun in case needed to complete sinking. 21.43 Opened fire with deck gun. 23.46 Ceased fire, vessel heavily listing, burning. 23.48 Large series of explosions. Vessel sunk Grid BF 33. 23.50 Secured Action Stations. Began torpedo reload, departed area at high speed. 27.02.40 Sea State: 1 --------- Weather: Clear 00.10 Spotted merchant vessel beaing 328 8000 meters. Grid BG 1245 00.20 Vessel identified as 4000 ton British merchant M-KF-M (R) type. Course 050 9 kts. 00.30 Fired torpedo tube 6 (TII G7e) 00.32 Torpedo missed, unknown cause. 00.36 Opened fired with deck gun. 00.59 M-KF-M (R) type merchant sunk, grid BF 33. 01.00 Secured action stations, departed area. 09.47 Aircraft spotted! Bearing 226 7000 meters. Alarm! Dive! 09.48 Leveled at 25 meters with 11 meters below keel. Several large explosions above, no damage. 20.00 Surfaced. 28.02.40 Transit to assigned grid. ----------- Sea State: 1 Weather: Clear 09.52 Aircraft spotted bearing 184 5000 meters Alarm! Dive! 09.53 Explosions, not close. 20.02 Surfaced. 29.02.40 Transit to assigned grid. ----------- Sea State: 1 Weather: Partial Clouds. 15.29 Aircraft spotted 168 4500 meters Alarm! Dive! 15.30 Leveled at 45 meters. Explosions heard above. 20.10 Surfaced. 01.03.40 Transit to area. --------- Sea State: 1 Weather: Clear Moon: Partial 02.03.40 Transit to area. --------- Sea State: 1 Weather: Clear Moon: None 22.55 Received Contact Report of Enemy convoy Grid BF 44 NNE Course Speed 6 kts. Was quite close to current position, set course to intercept. 03.03.40 Patrol. Searched for reported convoy. ----------- Sea State: 1, later 4. Weather: Clear, later overcast, rain. Winds 13.5 kts direction 238. Moon-None. 00.37 Convoy sighted Grid BF 17 Course 009 Speed 6 knots. Contact Report sent. Set course to pull ahead for attack. Called Action Stations for surfaced torpedo attack. 00.51 Received reply to contact report. Ordered to attack. 01.49 As prepared to attack, a sudden fog and overcast arrived in area with rain and 13 knot wind direction 269. Visiblity severely limited. However, decided to attempt push home the attack if possible. 02.09 Spotted merchant vessel ahead. Readied bow tubes. 02.12 Fired Tube No. 2 (TII G7e) at 2500 ton merchant. Range 600 meters. 02.13 Torpedo impact! Ship exploded, sinking. 02.15 Proceeding high speed into center of convoy. Large merchant bearing 270 300 meters attempted to ram. Star shells provided illumination. 02.17 2500 ton merchant vessel sunk Grid BF 17 02.21 Boat illuminated by searchlight of destroyer. Destroyer opened fire from 1000 meters. Alarm! Dive! 02.22 Enemy above dropped depth charges, explosions as passed 25 meters depth. Boat shaken,no serious damage. 02.29 Pinging, enemy searching. Boat depth 105 meters. 02.34 Depth 125 meters. 03.00 Enemy lost contact. Weather conditions aided in ease of escape. 03.20 Secured Action Stations. Maintained Silent Routine. 04.55 Periscope depth. Storms remained. All clear. Secured Silent Routine. 05.00 Surfaced. 04.03.40 Patrol. ----------- Sea State: 3 Weather: Overcast. Rain. Winds 13.5 kts direction 238. Moon-None. 05.03.40 Patrol. ----------- Sea State: 3, later 5 Weather: Overcast. Rain. Winds 13.5 kts direction 248. Later, winds increased to 30 kts direction 279. Moon-None. 06.03.40 Patrol. ----------- Sea State: 5 Weather: Overcast. Rain. Winds 30 kts direction 279. Moon-None. 07.03.40 Patrol. ----------- Sea State: 5 Weather: Overcast. Rain. Winds 30 kts direction 279. Moon-None. 08.03.40 Patrol. ----------- Sea State: 5 Weather: Clear, light fog. Winds 30 kts direction 142. Moon-None. 09.03.40 Patrol. ----------- Sea State: 5 Weather: Clear, light fog. Winds 30 kts direction 142. Moon-None. 10.03.40 Patrol. Searched for reported convoy. ----------- Sea State: 5 Weather: Clear, light fog. Winds 30 kts direction 142. Moon-None. 00.06 Received report of convoy in Grid m BF 47 Course North Speed 6 kts. Set course for intercept. 08.30 Submerged for sound check. 08.38 Detected distant screw noises bearing 313. 08.46 Surfaced. Set course for intercept. 09.54 Smoke plumes and outlines of convoy spotted bearings 010-040 estimated range twelve kilometers. 09.55 Action Stations. 10.00 Contact Report sent. Convoy Sighted. Grid BF 41 Course 021 Speed 5 kts. 12.00 Submerged ahead of convoy for attack. 12.20 Inside convoy, entered through gap in forward screen. 12.24 Fired tubes 1,2 in salvo(TII G7e) on 8300 ton tanker . Range 700 meters. 12.25 Torpedo impact! Second torpedo hit, but failed to explode. A "thud" was heard on impact but no explosion. Tanker damaged, burning from torpedo one, which did detonate. 12.27 Fired tube No.3 (TII G7e) at tanker. Torpedo hit, but failed to detonate. 12.28 Fired tube No.4 (TII G7e) Range 500 meters.Torpedo hit failed to explode. Began turn to bring stern tube to bare. 12.36 Fired Tube No.5 (TII G7e) range 610 meters. 12.37 Torpedo hit, but again failed to explode!. 12.38 Destroyer spotted 800 meters, closing fast. Pinging began. Ordered 120 meters hard dive. Rigged for depth charge and silent routine. 12.51 Noises of vessel breaking up audible through hull and on hydrophones. 13.00 Tubes 1,2 reloaded. Tube 5 reloaded. 13.10 Periscope depth. Observed tanker previously torpedoed, burning low in water. Observed another large 8000 plus ton tanker about to cross our stern. Set up for shot with Tube No.5 13.13 Fired Tube No.5 (TII G7e) Range 700 meters. 13.14 Torpedo impact! Large tanker burning. 13.15 Shifted target to previously torpedoed tanker brought bow tubes around to fire. 13.18 Fired tube No.1 (TII G7e) 13.19 Torpedo impact on first tanker torpedoed 13.26 Fired Tube No.2 (TII G7e) on another undamaged 8300 ton tanker. All torpedoes expended. 13.27 Torpedo hit, but failed to detonated. Another 'dud'! However, vessel appeared disabled as was drifting, took no evasive action. 13.30 Unable to surface to finish off with deck gun due to proximity of enemy destroyer. 13.40 Went to 90 meters, rigged for silent routine due to nearby enemy destroyer. 13.55 8300 ton tanker sunk Grid BF 41. Massive explosions, followed by breaking up noises. Rose to periscope depth to confirm. 14.15 Returned periscope depth. Enemy destroyers appeared to have moved on with convoy.in view one tanker disabled by dud at 2000 meters astern. 6000 meters ahead tanker torpedoed burning but underway. Another merchant or tanker is nerby, likely providing assistance. 14.16 Went to 25 meters. Secured from action stations, maintained silent routine. 14.27 Warship bearing 347 closing fast! Short range! Ordered 90 meters! Hard dive! Rigged for depth charge. 14.30 Lost contact with enemy warship. Continued to wait out enemy in order to surface after nightfall and attack damaged tanker with deck gun if possible. 18.06 Periscope depth. Burning, crippled tanker bearing 315 4000 meters. Went to 25 meters unil nightfall. 20.45 Surfaced for gun action. Sea state was heavy and made this difficult. 20.47 Opened fire with deck gun on crippled tanker. 21.06 Ceased fire, tanker exploded after 34 hits from high explosive rounds and sunk. 8500 ton tanker sunk Grd BF 41. 21.10 Out of torpedos with five vessel sunk early in patrol, sent status report to command. 21.40 Received orders to return to base. 11.03.40 Transit to Wilhelmshaven ----------- Sea State: 5 Weather: Clear, light fog. Winds 29 kts direction 082. Moon-None. 12.03.40 Transit to Wilhelmshaven ----------- Sea State: 5 Weather: Clear, light fog. Winds 25 kts direction 082. Moon-None. 12.03.40 Transit to Wilhelmshaven ----------- Sea State: 5 Weather: Clear, light fog. Winds 25 kts direction 082. Moon-Full 13.03.40 Transit to Wilhelmshaven ----------- Sea State: 3 Weather: Clear, light fog. Winds 15 kts direction 242. Moon-Partial 14.03.40 Transit to Wilhelmshaven ----------- Sea State: 3 Weather: Clear, light fog. Winds 15 kts direction 242. Moon-None. 14.03.40 Transit to Wilhelmshaven ----------- Sea State: 3 Weather: Clear, light fog. Winds 15 kts direction 242. Moon-None. 15.03.40 Transit to Wilhelmshaven ----------- Sea State: 3 Weather: Clear, light fog. Winds 14 kts direction 242. Moon-Partial. 16.03.40 Transit to Wilhelmshaven ----------- Sea State: 3 Weather: Clear, no fog. Winds 12 kts direction 272. Moon-Half. 17.03.40 Transit to Wilhelmshaven ----------- Sea State: 1 Weather: Clear Moon-Half. 18.03.40 ----------- Sea State: 2 Weather: Clear 07.30 Arrived Wilhelmshaven. Ships Hit ------------ 3 Merchants sunk- 3,800 tons, 4000 tons, 2800 tons. 2 Tankers sunk- 8,300 tons, 8,300 tons. 1 Tanker 8,500 tons damaged. (Sadly, I was relieved of command upon return to port. In spite of success in three patrols, sinking of two tankers from neutral nations caused me to be removed and picked up by the Gestapo (Secret Police as it said) hmmm. This changed from OM, was not aware. Sinking neutral ships sailing with Allied ships is bound to happen, one was sunk by mistake when a torpedo missed target and hit the neutral)

06-12-22, 10:33 PM	#5279
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	U48 night surface attack March 1940 Tracked a convoy all day to attack on surface at night. Ideal conditions. During approach, suddenly a storm blew in, seas grew heavy with winds, and rain, a light fog. Fortunately, at close range I could still see the ships, so took advantage and moved in for attack. Sunk one merchant. Attempted to set up on another but heavy seas made maneuvering into position difficult. Soon a destroyer was on scene, forcing us to dive. Rather dramatic attack.

06-16-22, 11:52 PM	#5280
Bubblehead1980 Navy Seal Join Date: Apr 2009 Location: Florida USA Posts: 6,922 Downloads: 550 Uploads: 42	U-47 Second Patrol June 1-July 9, 1940. Dark Waters/OM mod . 100 difficulty. Map contacts and external camera off. First run in u boats without map contacts, a lot of fun. Kriegstagebuch of the Kommandanten of "U-47" for the period from 01.06.-09.07.1940 Kommandant: Oberleutenant zur See Streigler 01.06.40 Depature from Wilhelmshaven ---------- Weather: Clear Sea State: 1 Moon: Partial 08.30 Departed Wilhelmshaven for assigned area. 02.06.40 Transit to Grid BE35 ---------- Weather: Clear Sea State: 1 Moon: Partial 0045 Test Dive. Depth under keel 35 meters. 0100 Surfaced. 03.06.40 Transit to Grid BE35 ---------- Weather: Clear Sea State: 1 Moon: Partial 04.06.40 Transit to Grid BE35 ---------- Weather: Clear Sea State: 1 Moon: Partial 10.00 Received orders to discontinue use of magnetic influence detonators. Ordered all torpedoes switched to impact only. 05.06.40 Transit to Grid BE35 ---------- Weather: Clear Clouds, Light fog. Winds 13 kts direction 121. Sea State: 1 Moon: None 06.06.40 Transit to Grid BE35 ---------- Weather: Clear Clouds, Light fog. Winds 29 kts direction 097. Sea State: 5 Moon: None 07.06.40 Transit to Grid BE35 ---------- Weather: Clear Clouds, Light fog. Winds 0 kts. Sea State: 0 Moon: None: 0 05.43 At sunrise, spotted vessel at 18 km bearing 359. Closed for intercept. 05.50 Submerged for attack. 06.12 Slowed for observation. Target is large tanker. Course 075. Speed 12 kts. 06.30 Fired Tube No.1 (TII G7e) at tanker. 2200 meters. 06.32 Torpedo impacted but failed to detonate. 06.34 Surfaced for gun action. 06.36 Opened fire with deck gun. 06.43 Tanker dead in water after multiple hits in stack/engine area. 06.46 Fired Tube No.2 (TII G7e) on surface, range 1500 meters. 06.47 Torpedo impact, large explosion. Tanker burned profusely, multiple explosions followed. 07.02 8300 ton tanker sunk. Grid AM 26. 11.45 Spotted 330 ton steam trawler bearing 300 17200 meters. 11.55 Submerged for observation. 12.10 Surfaced for gun action. 12.11 Opened fired. 12.16 Steam Trawler 330 tons sunk. Grid AM 28. 08.06.40 Transit to Grid BE35 ---------- Weather: Clear Clouds, Light fog. Winds 0 kts. Sea State: 0 Moon: None 09.06.40 Patrol. ---------- Weather: Clear Clouds, Light fog. Winds 0 kts. Sea State: 0 Moon: None 00.00 Entered assigned grid. 10.06.40 Patrol. ---------- Weather: Clear Clouds, Light fog. Winds 5 kts direction 131 Sea State: 1 Moon: None 11.06.40 Patrol. ---------- Weather: Clear Clouds, Light fog. Winds 17 kts direction 119. Sea State: 3 Moon: Partial 12.06.40 Patrol. ---------- Weather: Clear Clouds, Light fog. Winds 21 kts direction 097. Sea State: 4 Moon: None 11.45 Ship spotted bearing 347 range 17,100 meters. Set course to intercept. 12.41 Lost visual contact. Winds Seas calmed suddenly to state 1. 12.42 Submerged for sound check. 12.44 Sound contact 314 degrees estimated 15,000 meters. 12.45 Surfaced to pursue. 12.54 Regained visual contact with vessel. 12.56 Action Stations-Gun Action. 13.11 Sunk K-KM-KF-K-KM-K Merchant 9000 tons by gunfire. Grid BE36 13.12 Secured Action stations, resumed patrol. 13.06.40 Patrol ---------- Weather: Overcast, Rains, Heavy Fog. Winds 29 kts direction 031. Sea State: 5 Moon: None 14.06.40 Patrol ---------- Weather: Clear Clouds, Light Fog, Winds 29 kts direction 127. Sea State: 5 Moon: Half 15.06.40 Patrol ---------- Weather: Clear Clouds, Light Fog, Winds 29 kts direction 127. Sea State: 5 Moon: Half 16.06.40 Patrol ---------- Weather: Clear Clouds, Light Fog, Winds 29 kts direction 127. Sea State: 5 Moon: Half 17.06.40 Patrol ---------- Weather: Clear Clouds, Light Fog, Winds 11 kts direction 266. Sea State: 2 Moon: Quarter 18.06.40 Patrol ---------- Weather: Clear Clouds, Light Fog, Winds 2 kts direction 248. Sea State: 0 Moon: None. 19.06.40 Patrol ---------- Weather: Clear Clouds, Light Fog, Winds 2 kts direction 248. Sea State: 0 Moon: Full. 11.30 Seas increased to State 5. Winds 29 kts direction 007. 22.12 Ship spotted bearing 302 10,500 kilometers. Seas too heavy for deck gun attack, prepared for night surface torpedo firing. Target course 045 11 kts. 20.06.40 Patrol ---------- Weather: Clear Clouds, Light Fog, Winds 28 kts. Sea State: 5 Moon: Full. 00.09 Action stations for surface torpedo firing. 00.33 Target on course 035 9 kts. Turned boat about for stern torpedo shot down moon. 00.57 Fired Tube No. 6 (TII G7e) Range 3000 meters. 00.59 Torpedo missed, target increased speed. 01.56 Sunk 5975 ton K-M-K-KF-K=M merchant Grid BF 18 by torpedo. 21.06.40 Patrol ---------- Weather: Clear Clouds, Light Fog, Winds 28 kts. direction 164 Sea State: 5 Moon: Three Quarters 22.06.40 Patrol ---------- Weather: Overcast , Light Fog, Rain, Winds 29 kts, direction 201. Sea State: 5 Moon: None 23.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 3 kts, direction 306. Sea State: 0 Moon: None 23.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 3 kts, direction 306. Sea State: 0 Moon: None 24.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 11 kts, direction 306. Sea State: 2 Moon: None 25.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 11 kts, direction 306. Sea State: 2 Moon: None 26.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 4 kts, direction 306. Sea State: 0 Moon: Full 27.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 0 kts. Sea State: Moon: Half 28.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 0 kts. Sea State: Moon: Half 11.50 Aircraft sptted bearing 136 15 km. Alarm! Dive! 13.18 Surfaced. 29.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 13 kts. Sea State: 3 Moon: Half 30.06.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 13 kts. Sea State: 2 Moon: None 01.07.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 0 kts. Sea State: 10 Moon: None 00.00 Received message to shift operations to Lorient, France 02.07.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 30 kts. Sea State: 5 Moon: Half 03.07.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 28 kts. Sea State: 5 Moon: 14.15 Submerged for sound check. 14.17 Distant prop noises bearing 322. 14.29 Contacts determined to be traveling east. 14.30 Surfaced. Set course to close contacts. 14.50 Task Force Sighted Grid AM 27 Course 117 Speed 20 kts. One Battleship, One Cruiser, Two Destroyers. Contact Report Sent. 15.00 Received acknowledgement of contact report. Ordered to break contact. Unable to outpace enemy speed. Heavy seas also slowed U Boat. Shadowed as long as possible. 16.30 Broke Contact when TF changed course to North, increased speed. 18.25 Aircraft spotted bearing 059 6300 meters. Alarm! Dive! 22.44 Surfaced. Seas Calm, winds 0 knots. No fog. 04.07.40 Patrol ---------- Weather: Clouds Clear, Light Fog, Winds 24 kts. Sea State: 4 Moon: Partial 12.05 Received Report of Large Convoy in Grid AM 51. Course East North East 7 kts. Convoy position just 111 km away. Set course high speed to intercept 18.26 Near intercept point. Submerged for sound check. 18.29 Sound detected many screw noises bearing 000 ahead. 18.31 Surfaced to close. 18.47 Smoke sighted bearing 355. 18.51 Submerged for sound check. 19.00 Action Stations for torpedo attack. 19.35 Ahead of convoy at 25 meters depth, silent routine. Worked to enter convoy and avoid escort. 20.00 At 120 meters to avoid incoming lead escort, as convoy shifted course. 20.11 Escort passed above. Ordered periscope depth. 20.19 Periscope depth. Position inside convoy center columns. Set up on large tankers. 20.28 Fired Tubes 1,2,(TII G7e) at. 8.300 ton tanker. Range 650 meters. 20.29 Torpedo impact! Torpedo impact! Tanker on fire. 20.30 Fired Tube No. 5 at 6800 ton tanker astern. Range 700 meters. (TII G7e) 20.31 Torpedo impact! Pinging. Enemy corvette bearing 352 800 meters, closing fast. Alarm! Hard dive on planes. Rigged for Wasserbombe and silent routine. 20.32 Passed 44 meters as numerous Wasserbombe exploded.Boat shaken but no damage. 20.33 More pings and Wasserbombe. 20.38 Sounds of ships sinking, breaking up. Explosions. 20.49 Pinging. Enemy closing fast. Stood by for Wasserbombe. 20.52 120 meters depth. Leveled off. 20.54 More pinging. 20.59 Large explosions astern...sound of tanker exploding. 21.25 Secured Silent Routine. Ordered torpedoes reloaded. 21.35 Tubes reload. Resumed Silent Routine. 21.56 Secured Action Stations. Maintained Silent Routine. Waited out enemy above. 22.10 8,300 ton tanker sunk Grid AM 51. 23.05 Periscope Depth. Dusk. Spotted Destroyer bearing 030 8000 meters. Spotted Corvette 060 5000 meters. Spotted crippled tanker down by bow bearing 093 3800 meters. This was second tanker torpedoed (Tube No.5). Began turned about for follow up attack on tanker. 23.34 Fired Tube No.3(TII G7e) at crippled tanker. Range 2300 meters. 23.37 Torpedo impact! Large explosions. Tanker began to sink by bow. 23.38 6,800 ton tanker sunk Grid AM 51. Sunk by bow. 23.39 Resume Silent Routine. Ordered 80 meters. 05.07.40 Continued pursuit of convoy. ---------- Weather: Clouds Overcast, No Rain, Light Fog, Winds 9 kts. Sea State: 1 Moon: Obscured, quarter. 01.15 Periscope depth. 01.20 Surfaced. Set pursuit course 079. 01.55 Ships spotted bearing 000-015 10000 meters. Visual contact was intermittent due to fog. 01.56 Action Stations for torpedo firing-surface. 02.10 Lighting strikes in area. Light but strong fog. In spite of no moon, this summer night was quite bright. 02.13 Passed tanker 4000 meters to port, began turn for bow shot. 02.18 As prepared to fire, enemy destroyer appeared suddenly from fog, firing guns and illuminated boat with spot light. Ordered ahead flank and fired Tubes No.1(TII G7e) and No.2 (TII G7e) at 6500 ton tanker.Range 1500 meters Turned toward Destroyer after torpedo 2 exited tube to provide 0 AOB. Destroyer was now just 800 meters, closer than originally thought. Under fire, ordered dive. Rigged for wasserbombe and silent routine. 02.19 As passed 26 meters, wasserbombe explosions, one close. Leaks reported in stern torpedo compartment. 02.20 More wasserbombes, boat shaken. 02.21 Torpedo impact! Torpedo Impact! Both torpedoes hit target. 02.23 Leaks controlled. 02.25 Pinging. 02.40 Depth 150 meters. 03.05 Enemy destroyers heard leaving area high speed. 03.40 Periscope depth. All clear. 03.45 Surfaced. Set pursuit course. 03.50 Spotted damage tanker, listing but underway bearing 010 10,000 meters. 04.02 Fired Tube No.4 (TII G7e) at damaged tanker. Range 2600 meters. All bow torpedoes expended. 04.04 Torpedo missed, unknown reasons. 04.11 Enemy destroyers closing astern 4000 meters and from starboard 3,000 meters. 04.13 Fired Tube No.5 (TII G7e) at damaged tanker. Range 2700 meters. All torpedoes expended. Ordered dive, enemy destroyer closing. Just after ordering dive, enemy destroyer at bearing 040 illuminated the boat and opened fire from range 2900 meters. Rigged for silent routine and wasserbombe. 04.16 Torpedo impact! Many large explosions from tanker. Enemy destroyer above. Splashes! 04.17 Wasserbombe explosions, not close. 04.19 Pinging. 04.24 Depth 120 meters. Pinging. Enemy closing. 04.33 Short series of pings. Enemy warship closing fast. 04.34 Enemy passed above, splashes heard. 04.56 Explosions, above. Boat at 130 meters. 05.01 Secured Action Stations. Maintained Silent Routine. Boat at 140 meters. 09.00 Periscope depth. All clear. Secured Silent Routine. Set course 180. Remained submerged at 45 meters through daylight. 19.20 Surfaced. Set course of Loritent 06.07.40 Transit to Lorient. ---------- Weather: Clear Clouds. No Rain. Light Fog. Winds 13 knots. Sea State:2 Moon: None 07.07.40 Transit to Lorient. ---------- Weather: Clear Clouds. No Rain. Light Fog. Winds 3 knots. Sea State:0 Moon: None 05.14 Convoy Sighted. Grid BF 11 Course 327 Speed 7 knots. Contact Report sent. Out of torpedoes, unable to attack. 08.07.40 Transit to Lorient. ---------- Weather: Clear Clouds. No Rain. Light Fog. Winds 3 knots. Sea State:0 Moon: None 09.07.40 Arrived Lorient ---------- Weather: Clear Clouds. No Rain. Light Fog. Winds 3 knots. Sea State:0 Moon: None 09.00 Arrived Lorient, docked. End of patrol. Ships Hit ------------ 1. Tanker 8300 tons by torpedo Grid AM 26 June 7 1940 2. Steam Trawler 330 tons by gunfire Grid AM 28 June 7, 1940 3. K-KM-KF-K-KM-K Merchant by torpedo. 9000 tons Grid BE 36 June 12, 1940 4. K-M-K-KF-K-M Merchant 6000 tons Grid BF 18 June 20, 1940 5. Tanker 8300 tons by torpedo. Grid AM 51 July 4, 1940 6. Tanker 6,800 tons by torpedo Grid AM 51 July 4, 1940 7. Tanker 6,500 tons by torpedo Grid AM 52 July 5, 1940 Final Tonnage Awarded: 48,928 tons. Damage ----------- 1. Leaks in Stern Torpedo Compartment. Repaired at sea. Cause: Wasserbombe explosions. 2.Starboard electric Engine. Repaired at sea Cause" Wasserbombe explosions. 3.Radio Antenna. Repaired at sea. Cause: Machine Gun fire, enemy destroyer. 4. Observation periscope. Repaired at sea. Cause: Gunfire, enemy destroyer and/or wasserbombe explosions. 5. Light bulbs and Glass fixtures. Cause: Wasserbombe explosions.