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Old 06-10-21, 04:17 PM   #5057
Bubblehead1980
Navy Seal
 
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TMO 2.5 with custom mods
USS Besugo SS-321 2nd War Patrol
10 November- 3 December 1944
100 realism. Cams on contacts on (testing modifications to TMO)


10 November:

0900- Departed Saipan for patrol Area A2 in South China Sea East of Luzon. Upon completion of patrol, ordered terminate at Fremantle, Australia.


10 November-15 November transited to Patrol area.


17 November-

0240- SJ made contact on convoy at 12 NM bearing 321 degrees. Ordered intercept course.


0255- PPI scope revealed 17 pips with six forming a protective screen. Low light conditions and calm seas optimal for surfaced torpedo attack. Set course to try and enter convoy screen from port while escort was out of position sweeping. However a previously unseen escort appeared and quashed this opportunity. Pulled away to try and enter convoy from rear.


0320- Convoy screen at rear is too heavy with two escorts and merchant in column trailing a big , not enough distance to sneak in at required speeds. Pulled away and would try to enter screen from the front.


0340- Slipped past lead escort (Type C Escort) at 2800 yards and turned directly into convoy.

0348- Penetrated convoy between two center columns. Turned Besugo to starboard target SEITO MARU tanker (5600 tons) with rear tubes (Mark 18's) and KITRUIN MARU troopship with bow tubes. AOB on Kitruin was 40 with AOB on Tanker 110.

0351- Fired 4 Mark 18's at tanker from stern tubes. Fired three Mark 14's from bow tubes at troopship.

0352- Torpedo 1 hit the troopship was failed to detonate(reported as dud by sound operator. Rare issue at this point) but torpedoes 3 and 4 impacted and detonated. Troopship may have been loaded with ammunition as it exploded in a large flame and numerous secondary explosions occurred. Ship quickly began to settle.

0353-Stern torpedoes hit the tanker, which exploded in a massive fireball. Obviously loaded with fuel.

Turned to port and sped up to flank speed to get away from the scene was two flank escorts were heading our direction. Besugo was illuminated by the burning fires, several nearby merchants opened fire with machine gun/autocannons and deck guns. Several splashes landed in vicinity but non close. As disappeared into darkness and avoided spotlight of nearby merchant, gunfire ceased. The escorts were trolling the area of the sinkings but were astern as Besugo located another tanker, a 10000 ton NIPPON MARU class.

0401-Large explosion in far starboard column, torpedoes from another submarine found home. Escorts began flocking to the area except for one that was closing from the rear of convoy on Besugo's location. The tanker turned presenting a zero AOB and with no room or time to maneuver, fired one Mark 14 down the throat of the tanker. (shades of Ramage in Parche 31 July 1944)

0402-Torpedo impacted the tankers bow, setting off a massive explosion and fireball. Tanker obviously loaded with fuel. Burning and drifting, she was finished and eventually sunk.

0403-Noticed the escort was closing fast, turned to port at high speed to present stern and open distance. However, a nearby merchant's spotlight combined with the tankers burning fire illuminated Besugo, along with her gunfire.

0404-A large explosion in the far port column. Seems another pack mate attacked convoy. Right after, the escort opened fire with her deck guns from just 3200 yards, with splashes landing near forcing Besugo to dive

0406- As Besugo passed 200 feet, rigged for silent running and depth charge, many splashes were heard as escort roared overhead. Large pattern of charges exploded above, estimated depth of 100-150 feet. Boat shaken, minor leaks in conning tower above periscope, quickly stopped. Dropped SBT decoys as descended. Leveling boat off at 525 feet.


0410 - Two escorts now on scene making runs, one focused on decoy while other seemed to have Besugo pegged. As it made run went ahead flank and ordered 575 feet. Many splashes heard. A large pattern of depth charges exploded, mostly above but two were close boat's depth no serious damage.

0413-Boat leveled off at 600 feet. Both escorts seemed to focus on decoys.

0416- Strong pinging signal from an escort closing from ahead as Besugo continued slow starboard turn. As closed ordered more depth and ahead flank. Slowed and leveled at 650 feet after charges exploded, began turn to port.

0416-0500 several more patterns were dropped but none close as escort seem to have lost contact.

0510- Attempted to rise to scope depth but a "sleeper" started up engines, Went back to 600 feet.

0730- All was clear on sound. Came to scope depth, then made SJ and SD sweep. Surfaced and close lone contact at 11000 yards , likely was a wounded merchant but with caution in case a "sleeper." As dawn broke, observed a mid sized merchant believed to be 4800 ton KANAGA MARU down by the stern. Believe this was the port merchant torpedoed by another submarine at 0404. Ordered all guns manned to finish off the merchant.

0745- As Besugo closed and was about to open fire from 5000 yards, the KANAGA MARU, down by the bow, sunk at 18 34 N 118 37 E.


0750-Secured from GQ and commenced battery charge, heading on base course of convoy to regain contact.


0811-SD contact 10 NM. Forced to dive.

0930- Back on surface in pursuit, forced to dive multiple times due to aircraft.

18 November-

0000- Unable to regain contact, broke off pursuit and turned to course 030.

0900-SJ made contact on two pips at 11 NM closing. APR-1 detected radar emissions from the contacts bearing. Closed at high speed to investigate.


0920-In distance observed masts of a CA or CL , lead vessels appeared to be a DD. Called General Quarters-torpedo. Closed to cross the track and attack submerged with Mark 18's in stern tubes.

0925- DIVE

0934-Indentified a NAGARA Class CL with a Matsu Class DE on course 141 estimated speed 22 knots.


0938-Stern tubes ready. Depth set to 8 feet. Would fire from 1900 yards.

0940-Fired tubes 7, 8, and 9.

0943-One torpedo hit amidships of the CL. Other two missed, believe the ran deeper than set as should have hit.(Did something rarely do and used attack map, it showed them as should have been hits, only explanation is deep runner, still a an issue at this point with Mark 18, although somewhat rare)

0944- The Nagara slowed but turned away at 14-16 knots, while the Matsu closed in. Decided to present stern for a down the throat shot on the Matsu with last Mark 18. As was turning, an aircraft appeared overhead. Ordered a dive. As passed 124 feet, three close explosions rocked Besugo, minor damage to conning tower.


0946- As passed 400 feet, the DE roared overhead and dropped large pattern of depth charges. Many of these were close, bow torpedo room took brunt of damage, minor flooding was quickly stopped. Deployed decoys as continued descent.

0947-Multiple explosions overhead and at boat level, causing shaking and some damage in engine room and to trim pump, possibly MAD equipped. Believed from aircraft as DE was estimated 1000 yards away.


0950- At 575 feet, leveled off. DE roared overhead once again and let loose a large pattern. Went ahead flank with a slight turn to port. Charges exploded above, estimated 520-550 feet.

1030- DE has been quiet for 40 minutes, believe listening as Besugo crept along at 575 feet.

1041-Suddenly DE engines sprung to life, reported at 500 yards, began rapid pinging and dropped a large but inaccurate pattern.

1042-DE continued to move away at high speed towards last known direction of the CL.

1100-Lost sound contact with both DE and CL.


1104-Several explosions in general area, believed to be aircraft.


1300-At periscope depth, SD and SJ radar clear.

1302-Surfaced. Set pursuit course of damaged CL.

1330-SD contact forced Besugo to dive as it closed 6 NM.

1345-Surface.

1601-SJ regained contact on two pips, presumed to be the CL and DE. Pursued at high speed.

1900- Appeared CL still maintained speed advantage as was unable to close distance below 7 NM but able to maintain with CL. Estimated speed of 20-21 knots.Continued pursuit in case of zig or slow down.


19 November-

0000-Discontinued pursuit of CL.


1440- SJ contact on large Northbound convoy at 11 NM. Pulled ahead to shadow until night fall for surface attack.

1500-1900-An patrolling aircraft forced Besugo to submerged several times, but remained undetected.

2100-General Quarters. PPI scope showed 15 ships with 5 (presumed escorts). Approached convoy from rear as flanks were too heavily guarded.

2131-Inside convoy screen between two center columns.

2140 set up on a large HEIAN MARU freighter (11800 tons) with bow tubes. Fired three Mark 14's from 2000 yards.

2141- Two torpedoes hit, one missed. Freighter burning and listing. Spotlight and gunfire from a KOTO MARU freighter astern. Soon left it behind as HEIAN MARU capsized. Observed a kaibokan type escort from port side rushing in towards the scene.

2145-Gunfire ceased as Besugo disappeared into the darkness. Observed an AKEBONO MARU tanker. and began closing. Ships were now zigging making proper shots difficult.

2151- SD contact. Night flyer coming in. As contact neared, all stop. 40 MM guns manned in case. Plane had radar as APR-1 was detecting emissions but in darkness failed to spot Besugo . SD flew over convoy and remained in area before departing.

2200- Convoy zigged, throwing Besugo out of position. Spent next hour or so attempting to regain position. Forced to dive once due to SD contact.


20 November-

0002-Fired three Mark 14 torpedoes at the tanker from 2100 yards

0003- All three torpedoes hit, tanker exploded into the expected fireball and quickly sunk. Went ahead flank dodging gunfire and spotlights. Some machine gun or auto cannon fire scored a few hits. Damage reported to periscope shears, aft 40 MM gun and one crewmember lightly wounded. Several large shell splashes landed about 100 yards away. Soon ceased as raced into the darkness.


0004-Observed three escorts one from astern and two from starboard flank heading in towards scene of last attack. Now had three Mark 14's left forward and one Mark 18 aft.

0006- Forward escort was now heading towards Besugo, as if intended to enter convoy. A set up of being trapped was possible but the escorts astern had slowed and were investigating area of last tanker sunk.


Observed could torpedo a mid sized freighter and small freighter forward and a mid sized freighter aft with remaining aft torpedo. The two ships forward damaged or sunk would open a large gap in far column and permit an easy escape on surface.

0014 - Fired one torpedo at a small troopship (TYOHEI MARU) and two MADRAS MARU, with remaining stern torpedo at SEIA MARU mid sized freighter astern.

0016-First torpedo missed the small troopships (possible deep runner), second missed, but third hit MADRAS MARU.

0017- Stern torpedo hit SEIA MARU amidships causing large explosion and fire.

0018- As conned the boat to exit convoy came under fire at close range from Madras Maru, which was listing from its torpedo hit. The smaller troopship (now properly identified as a TAIHOSAN MARU small frieghter) also opened fire and illuminated Besugo with spotlight. Besugo moved at high speed dodging shell splashes. A few light MG or auto cannon rounds impacted but no apparent damage. 40 MM guns already manned due to earlier aircraft, ordered them to open fire(love having them set as deck guns. Player can man them as AA guns and provide a deterrent in emergency) on Madras Maru, with orders to aim for weapons. The effect seemingly silenced the gunners on Madras Maru as the listing ship stopped firing but was not yet sinking and spotlight remained on Besugo.


0019 Ordered 5 inch gun manned in case needed. Noticed on PPI scope now had four escorts from different directions closing in on position.

0020- Taihosan Maru continued lobbing shells despite slowing to avoid leaving wake (speed matters in detect, its a setting in the sim.cfg) and when one came too close for comfort. Ordered 5 inch gun to open fire. Four successive hits plus 40 MM fire set the small freighter on fire and turning away at best speed , guns silenced. Besugo ceased fire.

0025- SEIA MARU sunk. Escorts rapidly closing. Besugo speeding away and could avoid all but had one, the port flank escort who was forward racing in Besugo's direction and he had radar as APR-1 was detecting emissions, seemed to have a fix. Soon noticed others headed in direction, alerted by this escort. Ordered gun crews below and if could not outrun him, would dive.

0030 escort closed to 4000 yards. Identified at a Type C escort. While could match Besugo's speed, could not overtake us.

0032- Gambling he did not have an exact fix. Slowed to 14 knots and Put on 5 degrees starboard rudder to begin gentle turn off his course, slowly presenting stern with a little broadsides as he passed, ready to dive immediately if spotted.


0037- Escort passed astern of Besugo at 3800 yards. Besugo resumed flank speed to depart area.


0051- SD contact ordered a dive.

0100- Surface. Secure from GQ. Out of torpedoes, set course for Fremantle, Australia.


29 November

2200-Transited Lombok Strait Southbound.

2351-Avoided three PC types in center of strait.

2359-SD contact, never closed more than 6 NM. Radar detected.

30 November-

0004-Observed surfaced minefield east side off Lombok Island.

0021- Exited Lombok Strait.


1 December-4 December-

En route Fremantle.

5 December

0815- Arrived Fremantle. Terminated patrol.



Patrol Stats:

Patrol duration: 25

Days in area:5

Number of torpedo attacks:

3

Ships sunk: 7( 4 AK 3 AO)

Ships damaged: 2- 1CL, 1 AK.

Torpedoes Expended:24

Torpedo malfunctions: 1 dud confirmed, 4 believed to have ran deeper than set.

5 inch rounds expended:12

40 MM rounds expended:84

20 MM rounds expended:0

Damage: light-MG AC fire. Minor DC damage.

KIA:0

WIA: 1 (mild, returned to duty)

Some screenshots:

https://postimg.cc/gallery/C8dG8Tx

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