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Old 05-23-23, 07:20 AM   #436
Kapitän
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Default U 115 - First War Patrol (2nd leg) - Black May

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Saturday, 22 May 1943 - West of the Cape Verde Islands

0920 - Early Morning Dawn.

1023 - Sunrise. Weather and Sea unchanged in 11h.

1200 - Qu.3869EH - Days Run: 196.0nm - ↗ (24h)
Total: 3338.7nm (17tg 22h) - ↗ 3222.5nm (16tg 4h 19') - ↘ 116.2nm (1tg 17h 41')
464cbm (2cbm in 24h); Course 180°; Battery 100%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged in 13h.

1405 - Qu.3899EH - 2nd Op. Target completed.

1415 - Diving for torpedo maintenance and trial dive.

1418 - T=30. Beginning torpedo maintenance.

1511 - Tube I serviced.

1602 - Tube II serviced - Watch Change at 1607 -

1658 - Tube III serviced (tubes I-III are T-3/Pi39H) - Break and dinner until 1800 -

1851 - Tube V serviced (EtoFat/Pi39H).

1905 - CO₂ Warning at 1.7% (after 4h 50min.).

1942 - Tube VI serviced (T-4/Pi39H).

1949 - Reception Depth.

2002 - Beginning of Trial Dive acc. B.d.U. Standing Orders No.507 & 308. 145rpm/3kn.

2045 - Boat is safe and secure at 2A-Meter. Setting for T=20 with 145rpm.

2057 - Boat rises to T=17.

2058 - Boat is level at Reception Depth (140m in 13min. at 145rpm).

2105 - Surfaced after 6h 50min. and 18.8nm.
WNW6/5, light swell, clear light haze, medium visibility, >1000mb.

2106 - Boat ventilated. Battery 82.9%.

2109 - 2x225RPM/8kn.

2125 - Course 161°. Boat heading toward supply boat ("Milkcow" U 460; Kptlt. Ebe Schnoor; until 29.5. in Qu.8756ES).

2319 - Sundown. SW6/5, light swell, clear light haze, medium visibility, >1000mb.

2330 - Qu.6347EH -

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Sunday, 23 May 1943 - West of the Cape Verde Islands

0200 - Qu.6378EH - Outgoing F.T.: To B.d.U.:
Reached second patrol point acc. Op.Orders. Heading toward supply boat. 463cbm. 6 eels. SW6/5, clear, light haze, medium visibility,>1000mb. - RST -

0930 - Qu.6688EH - Early Morning Dawn.

1035 - Sunrise. Weather and Sea unchanged in 13.5h.

1104 - Incoming F.T.: From B.d.U.:
O.K.M.-Report about overwhelming superiority of enemy Anti Submarine Warfare, with total air patrol cover and equipping of enemy aircraft with new radar technology and enemy escorts with new Wabo throwers.

1112 - F.T. from B.d.U.: To all boats:
Acc. O.K.M.-Report as per B.d.U. F.T.1104/23/5, after 14 boats had been lost in the Atlantic in February, in March 13 and in April 12, the extent of the losses in the Atlantic in May has already reached the figure of 31 boats lost up to the 22nd May, and 2 further ones have probably been lost in the operation against HX 239.
Losses, even heavy losses, must be borne when they are accompanied by corresponding sinkings. But, in May in the Atlantic, the sinking of about 10,000 GRT had to be paid for by loss of a boat, while not long ago there was loss only with the sinking of about 100,000 GRT. The losses in May have, therefore, reached an impossible height. For one, they were lost during convoy operations and for another, during passage of the Bay of Biscay. Under the current circumstances, it is impossible to continue with convoy operations.
- signed - B.d.U. & Grand Admiral Karl Dönitz -

1200 - Qu.6929EH - Days Run: 156.6nm - ↗ 137.8nm (17h 10') - ↘ 18.8nm (6h 50')
Total: 3495.3nm (18tg 22h) - ↗ 3360.3nm (16tg 21h 29') - ↘ 135.0nm (2tg 0h 31')
463cbm (1cbm in 24h); Course 161°; Battery 83%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged in 15h.

1824 - East7/6, clear, good visibility, >1000mb.

2212 - Qu.7147EJ -

2305 - Incoming Radio Reports:

From O.K.W.:
a) Yesterday, The Führer, Erhard Milch, Adolf Galland, Willy Messerschmitt and others previewed the Me 262 jet fighter at Lechfeld, München-Oberbayern. The Führer liked the jet and demanded it to be used as a bomber.
b) The heaviest air raid of the war thus far, was launched today by the RAF against Dortmund.

From B.d.U.:
a) Op.-Order No.55 about Flak-Uboats (U 441 & U 256), incl. Enclosure 1 to Operational Order No.55, detailing Instructions of Flak-Op. when attacked by A/C on surface, from 07 May 1943; to be used in conjunction with Operational Order Atlantic No. 54.

2316 - Sundown. Weather and Sea unchanged in 5h.

RST
KorvKpt.& Cmdr. U 115
__________________
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Last edited by Kapitän; 05-23-23 at 12:49 PM. Reason: Wrong headline
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Old 05-24-23, 02:59 AM   #437
Kapitän
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Default U 115 - First War Patrol (2nd leg) - Black May - New B.d.U.-Orders

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Sunday, 23 May 1943 - West of the Cape Verde Islands

0200 - Qu.6378EH - Outgoing F.T.: To B.d.U.:
Reached second patrol point acc. Op.Orders. Heading toward supply boat. 463cbm. 6 eels. SW6/5, clear, light haze, medium visibility,>1000mb. - RST -

0930 - Qu.6688EH - Early Morning Dawn.

1035 - Sunrise. Weather and Sea unchanged in 13.5h.

1104 - Incoming F.T.: From B.d.U.:
O.K.M.-Report about overwhelming superiority of enemy Anti Submarine Warfare, with total air patrol cover and equipping of enemy aircraft with new radar technology and enemy escorts with new Wabo throwers.

1112 - F.T. from B.d.U.: To all boats:
Acc. O.K.M.-Report as per B.d.U. F.T.1104/23/5, after 14 boats had been lost in the Atlantic in February, in March 13 and in April 12, the extent of the losses in the Atlantic in May has already reached the figure of 31 boats lost up to the 22nd May, and 2 further ones have probably been lost in the operation against HX 239.
Losses, even heavy losses, must be borne when they are accompanied by corresponding sinkings. But, in May in the Atlantic, the sinking of about 10,000 GRT had to be paid for by loss of a boat, while not long ago there was loss only with the sinking of about 100,000 GRT. The losses in May have, therefore, reached an impossible height. For one, they were lost during convoy operations and for another, during passage of the Bay of Biscay. Under the current circumstances, it is impossible to continue with convoy operations.
- signed - B.d.U. & Grand Admiral Karl Dönitz -

1200 - Qu.6929EH - Days Run: 156.6nm - ↗ 137.8nm (17h 10') - ↘ 18.8nm (6h 50')
Total: 3495.3nm (18tg 22h) - ↗ 3360.3nm (16tg 21h 29') - ↘ 135.0nm (2tg 0h 31')
463cbm (1cbm in 24h); Course 161°; Battery 83%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged in 15h.

1824 - East7/6, clear, good visibility, >1000mb.

2212 - Qu.7147EJ -

2305 - Incoming Radio Reports:

From O.K.W.:
a) Yesterday, The Führer, Erhard Milch, Adolf Galland, Willy Messerschmitt and others previewed the Me 262 jet fighter at Lechfeld, München-Oberbayern. The Führer liked the jet and demanded it to be used as a bomber.
b) The heaviest air raid of the war thus far, was launched today by the RAF against Dortmund.

From B.d.U.:
a) Op.-Order No.55 about Flak-Uboats (U 441 & U 256), incl. Enclosure 1 to Operational Order No.55, detailing Instructions of Flak-Op. when attacked by A/C on surface, from 07 May 1943; to be used in conjunction with Operational Order Atlantic No. 54.

2316 - Sundown. Weather and Sea unchanged in 5h.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Monday, 24 May 1943 - Southwest of the Cape Verde Islands

0400 - Qu.7443EJ - SSW5/4, medium swell, overcast, light haze, limited visibility, ~1000mb.

0745 - Qu.7488EJ - Crash dive for training. T=10 after 41 Sec.

1748 - A-Meter.

0800 - A-20.

0952 - Reception Depth. CO₂ 1.3%; Compressed Air Supply 260 Atü; Battery 80%.

1000 - Surfaced after 2h 15min. and 6.1nm.
Weather and Sea unchanged.

1005 - Boat ventilated and Compressed Air Supply filled. 2x225RPM/8kn.

1038 - Sunrise. Weather and Sea unchanged in 6.5h.

1104 - F.T. from B.d.U.: To all boats:

Orders were given on May 22nd as follows ("All Waves"):

(Message 1752):
The danger of being surprised by locating aircraft is very great, especially at night. The following orders are, therefore, given:
1) Procedure when approaching and returning from the Biscay area and approaching the area home North Atlantic as in Permanent Order No. 13.
2) Procedure in the operational area North Atlantic when cruising and stopping in position.
a) By night: One electric motor slow to half speed, other motor Diesel ready to start up. Boats ventilator switched off. Reason for this: To be able to confirm approaching aircraft by hydrophone. MG ready and manned.
b) By day: With higher cruising speed than before confirm that boat can be easily maneuvered and is able to dive.
c) If weather conditions are unfavorable by day and night proceed only underwater.
3) When contacting the enemy: Operations as before.

(Message 1769):
In almost every operation boats are seriously endangered by submerging in view of aircraft even when a safe depth cannot be reached before the bombs are released. It should be impressed on all Officers of the Watch that when the protective depth i.e. 80 to 100 m., can no longer be attained with certainty before bombs are released, i.e. always when the watch on the bridge is taken by surprise, it is best to remain surfaced and ward off the aircraft attack with Flak guns. We do not know how often loss has been caused by submerging too late. However, we do know that defense measures when surfaced have led to success in all cases reported.
Apart from this, the situation in the North Atlantic now forces a temporary shifting of operations to areas less endangered by aircraft. The following areas come into consideration: the Caribbean Sea, the area off Trinidad, the area off the Brazilian and West African coasts. It is, therefore, intended to operate primarily with VIIC boats in these areas, as far as permitted by the supply situation. If necessary, operational boats must also be sent in to supply other boats. With the boats at present in the North Atlantic, operations will be made against the traffic between USA and Gibraltar - as far as these boats are able to do this with their fuel. The North Atlantic cannot, however, be entirely denuded of boats. It is necessary, by means of single boats, to leave the enemy in ignorance as long as possible regarding alterations in tactics. For this operation in the North Atlantic boats are available now which cannot be sent elsewhere in view of their fuel supplies, and also boats coming from home waters for their first operations, which must be assigned the stay in the North Atlantic in spite of the difficult conditions. It is intended to attempt attacks on a convoy only under particularly favorable conditions, i.e. in the time of the new moon. The new moon period at the end of June is the first to come into consideration, since the boats at present in the North Atlantic are no longer operational enough. It will be necessary to assign several veteran boats for this as a support for the newer boats in the North Atlantic.
These decisions comprise a temporary deviation from the former principles for the conduct of U-boat warfare. This is necessary in order not to allow the U-boats to be beaten at a time when their weapons are inferior, by unnecessary losses while achieving very slight success. It is, however, clearly understood that the main operational area of U-boats is, as it always was, in the North Atlantic and that operations must be resumed there with every determination as soon as the U-boats are given the necessary weapons for this. Equipment with 2 cm., quadruples, which will begin as from June to an increasing degree will be the first step in this direction, equipment with Zaunkönig torpedoes (anti-destroyer) the second step, while improvement of location devices at the moment is still to be considered. It is, however, anticipated that after equipment with quadruples, i.e. from the Autumn, the battle of the North Atlantis will be completely resumed once more.
In the meantime it is essential that the morale of the men should not be affected by these temporary defensive measures, a task which requires full cooperation of the Commanding Officers, as well as the personal touch of the Commander in Chief of the Navy.

- signed - B.d.U. & Grand Admiral Karl Dönitz -

1200 - Qu.7729EJ - Days Run: 179.5nm - ↗ 173.4nm (21h 45') - ↘ 6.1nm (2h 15')
Total: 3674.8nm (19tg 22h) - ↗ 3533.7nm (17tg 19h 14') - ↘ 141.1nm (2tg 2h 46')
461cbm (2cbm in 24h); Course 161°; Battery 80%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged in 8h.

1605 - Qu.7794EJ - WSW6/5, medium swell, partly cloudy, medium visibility, >1000mb.
Crash dive for training. T=10 after 39 Sec.

1608 - A-Meter.

1625 - A-20.

1807 - Reception Depth. CO₂ 1.3%; Compressed Air Supply 265 Atü; Battery 74.3%.

1815 - Surfaced after 2h 10min. and 5.8nm.
Weather and Sea unchanged since 1600.

1816 - Boat ventilated.

1821 - Compressed Air Supply filled. 2x225RPM/8kn.

2312 - Sundown. SW6/5, medium swell, partly cloudy, medium visibility, >1000mb, shifting South.

RST
KorvKpt.& Cmdr. U 115
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Old 05-24-23, 01:51 PM   #438
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I am really curious about this, Kapitän:
Quote:
Originally Posted by Kapitän View Post
...
2) Procedure in the operational area North Atlantic when cruising and stopping in position.
a) By night: One electric motor slow to half speed, other motor Diesel ready to start up. Boats ventilator switched off. Reason for this: To be able to confirm approaching aircraft by hydrophone. MG ready and manned.
...
How did they accomplish that? Thank you!
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Old 05-24-23, 02:09 PM   #439
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Default

Quote:
Originally Posted by propbeanie View Post
I am really curious about this, Kapitän:

How did they accomplish that? Thank you!
Hello propbeanie,

Yes, very good question! I actually wondered about this as well.

Mind you, this is an English translation of the original B.d.U.-KTB in German, and I do not have the German original at hand.

Perhaps, it was translated into English incorrectly. On the other hand, within the context, what other means would the Uboat crews have, to listen for approaching a/c, than the hydrophone. So, I'm guessing, that this was actually possible.

However, I have no record of this ever being done or to what extend this method was successful.
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Old 05-25-23, 07:24 AM   #440
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Default U 115 - First War Patrol (2nd leg) - Black May - New B.d.U.-Orders

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Monday, 24 May 1943 - Southwest of the Cape Verde Islands

0400 - Qu.7443EJ - SSW5/4, medium swell, overcast, light haze, limited visibility, ~1000mb.

0745 - Qu.7488EJ - Crash dive for training. T=10 after 41 Sec.

1748 - A-Meter.

0800 - A-20.

0952 - Reception Depth. CO₂ 1.3%; Compressed Air Supply 260 Atü; Battery 80%.

1000 - Surfaced after 2h 15min. and 6.1nm.
Weather and Sea unchanged.

1005 - Boat ventilated and Compressed Air Supply filled. 2x225RPM/8kn.

1038 - Sunrise. Weather and Sea unchanged in 6.5h.

1104 - F.T. from B.d.U.: To all boats:

Orders were given on May 22nd as follows ("All Waves"):

(Message 1752):
The danger of being surprised by locating aircraft is very great, especially at night. The following orders are, therefore, given:
1) Procedure when approaching and returning from the Biscay area and approaching the area home North Atlantic as in Permanent Order No. 13.
2) Procedure in the operational area North Atlantic when cruising and stopping in position.
a) By night: One electric motor slow to half speed, other motor Diesel ready to start up. Boats ventilator switched off. Reason for this: To be able to confirm approaching aircraft by hydrophone. MG ready and manned.
b) By day: With higher cruising speed than before confirm that boat can be easily maneuvered and is able to dive.
c) If weather conditions are unfavorable by day and night proceed only underwater.
3) When contacting the enemy: Operations as before.

(Message 1769):
In almost every operation boats are seriously endangered by submerging in view of aircraft even when a safe depth cannot be reached before the bombs are released. It should be impressed on all Officers of the Watch that when the protective depth i.e. 80 to 100 m., can no longer be attained with certainty before bombs are released, i.e. always when the watch on the bridge is taken by surprise, it is best to remain surfaced and ward off the aircraft attack with Flak guns. We do not know how often loss has been caused by submerging too late. However, we do know that defense measures when surfaced have led to success in all cases reported.
Apart from this, the situation in the North Atlantic now forces a temporary shifting of operations to areas less endangered by aircraft. The following areas come into consideration: the Caribbean Sea, the area off Trinidad, the area off the Brazilian and West African coasts. It is, therefore, intended to operate primarily with VIIC boats in these areas, as far as permitted by the supply situation. If necessary, operational boats must also be sent in to supply other boats. With the boats at present in the North Atlantic, operations will be made against the traffic between USA and Gibraltar - as far as these boats are able to do this with their fuel. The North Atlantic cannot, however, be entirely denuded of boats. It is necessary, by means of single boats, to leave the enemy in ignorance as long as possible regarding alterations in tactics. For this operation in the North Atlantic boats are available now which cannot be sent elsewhere in view of their fuel supplies, and also boats coming from home waters for their first operations, which must be assigned the stay in the North Atlantic in spite of the difficult conditions. It is intended to attempt attacks on a convoy only under particularly favorable conditions, i.e. in the time of the new moon. The new moon period at the end of June is the first to come into consideration, since the boats at present in the North Atlantic are no longer operational enough. It will be necessary to assign several veteran boats for this as a support for the newer boats in the North Atlantic.
These decisions comprise a temporary deviation from the former principles for the conduct of U-boat warfare. This is necessary in order not to allow the U-boats to be beaten at a time when their weapons are inferior, by unnecessary losses while achieving very slight success. It is, however, clearly understood that the main operational area of U-boats is, as it always was, in the North Atlantic and that operations must be resumed there with every determination as soon as the U-boats are given the necessary weapons for this. Equipment with 2 cm., quadruples, which will begin as from June to an increasing degree will be the first step in this direction, equipment with Zaunkönig torpedoes (anti-destroyer) the second step, while improvement of location devices at the moment is still to be considered. It is, however, anticipated that after equipment with quadruples, i.e. from the Autumn, the battle of the North Atlantis will be completely resumed once more.
In the meantime it is essential that the morale of the men should not be affected by these temporary defensive measures, a task which requires full cooperation of the Commanding Officers, as well as the personal touch of the Commander in Chief of the Navy.

- signed - B.d.U. & Grand Admiral Karl Dönitz -

1200 - Qu.7729EJ - Days Run: 179.5nm - ↗ 173.4nm (21h 45') - ↘ 6.1nm (2h 15')
Total: 3674.8nm (19tg 22h) - ↗ 3533.7nm (17tg 19h 14') - ↘ 141.1nm (2tg 2h 46')
461cbm (2cbm in 24h); Course 161°; Battery 80%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged in 8h.

1605 - Qu.7794EJ - WSW6/5, medium swell, partly cloudy, medium visibility, >1000mb.
Crash dive for training. T=10 after 39 Sec.

1608 - A-Meter.

1625 - A-20.

1807 - Reception Depth. CO₂ 1.3%; Compressed Air Supply 265 Atü; Battery 74.3%.

1815 - Surfaced after 2h 10min. and 5.8nm.
Weather and Sea unchanged since 1600.

1816 - Boat ventilated.

1821 - Compressed Air Supply filled. 2x225RPM/8kn.

2312 - Sundown. SW6/5, medium swell, partly cloudy, medium visibility, >1000mb, shifting South.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Tuesday, 25 May 1943 - South of the Cape Verde Islands

- 3rd week at sea completed -

0035 - Qu.1271ES - SSW6/5, medium swell, partly cloudy, medium visibility, >1000mb, shifting East.

0308 - Qu.1512ES - East6/5, medium swell, partly cloudy, medium visibility, >1000mb.

0700 - Qu.1557ES - Diving for torpedo maintenance and trial dive.

0707 - T=50. Beginning torpedo maintenance.

0758 - Tube I serviced.

0815 - Tube II pulled - Watch Change at 0811 -

0849 - Tube II serviced.

0940 - Tube III serviced (tubes I-III are T-3/Pi39H).

1031 - Tube V serviced (EtoFat/Pi39H).

1042 - Sunrise.

1122 - Tube VI serviced (T-4/Pi39H).

1130 - Reception Depth. Beginning of Trial Dive acc. B.d.U. Standing Order No.507 & No.308. 145rpm/3kn.

1150 - CO₂ Warning at 1.7% (after 4h 50min.).

1200 - Qu.1584ES - Days Run: 152.5nm - ↗ 133.2nm (16h 50') - ↘ 19.3nm (7h 10')
Total: 3827.3nm (20tg 22h) - ↗ 3666.9nm (18tg 12h 04') - ↘ 160.4nm (2tg 9h 56')
458cbm (3cbm in 24h); Course 161°; T=A+50; Battery 63%; CO₂ 1.8%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold.

1216 - Boat is safe and secure at 2A-Meter. Setting for T=20 with 145rpm.

1227 - At A-Meter, 96rpm.

1231 - Boat rises to T=18.5m.

1234 - Boat is level at Reception Depth (140m in 18min. at 145rpm and 96rpm). Battery 61.5%; Compressed Air Supply 285 Atü; CO₂ 1.8%.

1239 - F.T. from B.d.U.: To all U-boat Commanders:

1) Our heavy U-boat losses in the last month are to be attributed primarily to the present superiority of enemy location gear and the surprise attacks from the air enabled by these. More than half of these losses have occurred by reason of their surprise tactics, on approach and return passage, as well as in the operational area in attack positions. The losses in attacks against convoys themselves were, however, slight except for one case in which conditions were particularly unfavorable. A part of these losses also occurred through air attack.
2) The present situation in regard to enemy aircraft and enemy location must be counterbalanced, through entailing other disadvantages, by special precautionary measures while proceeding and in waiting positions. Orders regarding this have been issued. I shall also come to further conclusions in the selection of operational area.
3) I am directing my whole attention to the improvement of our own location, anti-location means and Flak armament. This problem is being worked on everywhere with great concentration. Practical results will shortly be introduced for operations. Until then cruising and waiting must be carried out with skill and care, but actual attacks with the same tenacity as ever.

- signed - B.d.U. & Grand Admiral Karl Dönitz -

1240 - Surfaced after 40min. and 2.2nm since Etmal (Total: 5h 40min. and 15.7nm). Weather and Sea unchanged in 9.5h.

1242 - Boat ventilated and Compressed Air Supply filled. 2x225RPM/8kn.

1611 - SE1/1, partly cloudy, light haze, medium visibility, >1000mb.

1615 - Charging batteries (61.5%): Stbd.-Charging, 496RPM; Port-Propulsion, 285RPM/8kn.

1930 - Batteries charged => 3h 15min. for 38.5%. 2xSmall-Ahead/185RPM/7kn

1935 - Test Run of main diesels acc. B.d.U.-Standing Order No.510. - 285RPM/1/3-Ahead/10kn.

1940 - 375RPM/2xH.F./13kn.

1945 - 455RPM/Full-Ahead/16kn.

1950 - 496RPM/A.K./18kn/30min.

2020 - Reducing speed in speed settings of 5min. decrements.

2035 - 2x225RPM/8kn.

2311 - Sundown. Weather and Sea unchanged since 1611 (7h).

RST
KorvKpt.& Cmdr. U 115
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Old 05-26-23, 06:33 AM   #441
Kapitän
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Default U 115 - First War Patrol (2nd leg) - Black May - B.d.U.-Order of the Day

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Tuesday, 25 May 1943 - South of the Cape Verde Islands

- 3rd week at sea completed -

0035 - Qu.1271ES - SSW6/5, medium swell, partly cloudy, medium visibility, >1000mb, shifting East.

0308 - Qu.1512ES - East6/5, medium swell, partly cloudy, medium visibility, >1000mb.

0700 - Qu.1557ES - Diving for torpedo maintenance and trial dive.

0707 - T=50. Beginning torpedo maintenance.

0758 - Tube I serviced.

0815 - Tube II pulled - Watch Change at 0811 -

0849 - Tube II serviced.

0940 - Tube III serviced (tubes I-III are T-3/Pi39H).

1031 - Tube V serviced (EtoFat/Pi39H).

1042 - Sunrise.

1122 - Tube VI serviced (T-4/Pi39H).

1130 - Reception Depth. Beginning of Trial Dive acc. B.d.U. Standing Order No.507 & No.308. 145rpm/3kn.

1150 - CO₂ Warning at 1.7% (after 4h 50min.).

1200 - Qu.1584ES - Days Run: 152.5nm - ↗ 133.2nm (16h 50') - ↘ 19.3nm (7h 10')
Total: 3827.3nm (20tg 22h) - ↗ 3666.9nm (18tg 12h 04') - ↘ 160.4nm (2tg 9h 56')
458cbm (3cbm in 24h); Course 161°; T=A+50; Battery 63%; CO₂ 1.8%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold.

1216 - Boat is safe and secure at 2A-Meter. Setting for T=20 with 145rpm.

1227 - At A-Meter, 96rpm.

1231 - Boat rises to T=18.5m.

1234 - Boat is level at Reception Depth (140m in 18min. at 145rpm and 96rpm). Battery 61.5%; Compressed Air Supply 285 Atü; CO₂ 1.8%.

1239 - F.T. from B.d.U.: To all U-boat Commanders:

1) Our heavy U-boat losses in the last month are to be attributed primarily to the present superiority of enemy location gear and the surprise attacks from the air enabled by these. More than half of these losses have occurred by reason of their surprise tactics, on approach and return passage, as well as in the operational area in attack positions. The losses in attacks against convoys themselves were, however, slight except for one case in which conditions were particularly unfavorable. A part of these losses also occurred through air attack.
2) The present situation in regard to enemy aircraft and enemy location must be counterbalanced, through entailing other disadvantages, by special precautionary measures while proceeding and in waiting positions. Orders regarding this have been issued. I shall also come to further conclusions in the selection of operational area.
3) I am directing my whole attention to the improvement of our own location, anti-location means and Flak armament. This problem is being worked on everywhere with great concentration. Practical results will shortly be introduced for operations. Until then cruising and waiting must be carried out with skill and care, but actual attacks with the same tenacity as ever.

- signed - B.d.U. & Grand Admiral Karl Dönitz -

1240 - Surfaced after 40min. and 2.2nm since Etmal (Total: 5h 40min. and 15.7nm). Weather and Sea unchanged in 9.5h.

1242 - Boat ventilated and Compressed Air Supply filled. 2x225RPM/8kn.

1611 - SE1/1, partly cloudy, light haze, medium visibility, >1000mb.

1615 - Charging batteries (61.5%): Stbd.-Charging, 496RPM; Port-Propulsion, 285RPM/8kn.

1930 - Batteries charged => 3h 15min. for 38.5%. 2xSmall-Ahead/185RPM/7kn

1935 - Test Run of main diesels acc. B.d.U.-Standing Order No.510. - 285RPM/1/3-Ahead/10kn.

1940 - 375RPM/2xH.F./13kn.

1945 - 455RPM/Full-Ahead/16kn.

1950 - 496RPM/A.K./18kn/30min.

2020 - Reducing speed in speed settings of 5min. decrements.

2035 - 2x225RPM/8kn.

2311 - Sundown. Weather and Sea unchanged since 1611 (7h).

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Wednesday, 26 May 1943 - West of Freetown

0950 - Early Morning Dawn.

1049 - Sunrise. SE1/1, partly cloudy, medium visibility, >1000mb.

1200 - Qu.4922ES - Days Run: 199.5nm - ↗ 197.3nm (23h 20') - ↘ 2.2nm (40')
Total: 4026.8nm (21tg 22h) - ↗ 3864.2nm (19tg 11h 24') - ↘ 162.6nm (2tg 10h 36')
455cbm (3cbm in 24h); Course 161°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged since Sunrise.

1400 - Outgoing F.T.: To B.d.U.:
Will be a Supply Boat 27.5., 1400. - RST -

2305 - Sundown. NNE1/1, partly cloudy, medium visibility, >1000mb.

2306 - Incoming Radio Reports:

To all U-boat Officers:

Most Secret

Order of the Day, from 24.May 1943.

The increasingly hard and bitter struggle against our victory leads me to emphasize to you the seriousness of our present situation and future. You know that we are fighting off successfully with the army and air force on all fronts the extremely strong attacks of the enemy, engagements being very heavy in some cases. This battle for the security of the homeland and occupied territories must be carried in in order to ensure food for our people and the manufacture of weapons and ammunition for the front. You must understand clearly that the present struggle only constitutes a stand against an enemy stronger in men and material but it does not suffice to bring about a speedy and definite victory.

You alone can, at the moment, make an offensive attack against the enemy and beat him. The U-boat must, by continuous sinking of ships with war material and the necessary supplies for the British Isles, force the enemy to continual losses which must slowly but steadily sap the strength of the strongest force. The German people have long felt that our boats constitute the keenest and most decisive weapon and that the outcome of the war depends on the success or failure of the Battle of the Atlantic.

Each one of you must be aware of his great responsibility and every Commanding Officer must be able to say that he has conducted operations with every effort and tenacity in order to attain our important goal. I know that operations for you out there at the moment are some of the hardest and most costly in losses, since the enemy's defence at the moment is superior in view of new technical methods. Believe me, I have done everything and will continue to do so, in order to introduce means to counter this enemy advance. The time will soon come in which you will be superior to the enemy with new and stronger weapons and will be able to triumph over your worst enemies, the aircraft and the destroyer.

In the meantime we must master the situation with the measures already ordered and with a partial change in operational areas. We will, therefore, not allow ourselves to be forced into the defensive and will not rest but, where there is an opportunity, continue to strike and fight on with still more fortitude and decision in order to make ourselves even stronger for the decisive Battle of the North Atlantic, which will be carried out shortly with improved weapons, in the area most vulnerable for the enemy.

We will then be the victors, - my faith in our boats and in you convinces me of this.

Heil Hitler,
Commander in Chief
Dönitz

From O.K.W.:
a) At Peenemünde, before Hermann Göring, Erhard Milch, and other top German leaders, a A-4 rocket (V-2) and a flying bomb (V-1) were tested. The A-4 rocket flew perfectly, while the flying bomb crashed only after a mile or two of flight.
b) Starting at about 0200 hours, 759 British heavy bombers attacked Düsseldorf.
c) The Red Army launched an offensive against our troops in the Kuban bridgehead between the Sea of Azov and the Black Sea.

B-Dienst Report:
a) Auxiliary Aircraft Carrier USS Bogue (CVE-9) and her task group arrived at Argentia, Newfoundland.

RST
KorvKpt.& Cmdr. U 115
__________________
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Old 05-27-23, 05:28 AM   #442
Kapitän
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Default U 115 - First War Patrol (2nd leg) - Heading for "Milkcow"

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Wednesday, 26 May 1943 - West of Freetown

0950 - Early Morning Dawn.

1049 - Sunrise. SE1/1, partly cloudy, medium visibility, >1000mb.

1200 - Qu.4922ES - Days Run: 199.5nm - ↗ 197.3nm (23h 20') - ↘ 2.2nm (40')
Total: 4026.8nm (21tg 22h) - ↗ 3864.2nm (19tg 11h 24') - ↘ 162.6nm (2tg 10h 36')
455cbm (3cbm in 24h); Course 161°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged since Sunrise.

1400 - Outgoing F.T.: To B.d.U.:
Will be a Supply Boat 27.5., 1400. - RST -

2305 - Sundown. NNE1/1, partly cloudy, medium visibility, >1000mb.

2306 - Incoming Radio Reports:

To all U-boat Officers:

Most Secret

Order of the Day, from 24.May 1943.

The increasingly hard and bitter struggle against our victory leads me to emphasize to you the seriousness of our present situation and future. You know that we are fighting off successfully with the army and air force on all fronts the extremely strong attacks of the enemy, engagements being very heavy in some cases. This battle for the security of the homeland and occupied territories must be carried in in order to ensure food for our people and the manufacture of weapons and ammunition for the front. You must understand clearly that the present struggle only constitutes a stand against an enemy stronger in men and material but it does not suffice to bring about a speedy and definite victory.

You alone can, at the moment, make an offensive attack against the enemy and beat him. The U-boat must, by continuous sinking of ships with war material and the necessary supplies for the British Isles, force the enemy to continual losses which must slowly but steadily sap the strength of the strongest force. The German people have long felt that our boats constitute the keenest and most decisive weapon and that the outcome of the war depends on the success or failure of the Battle of the Atlantic.

Each one of you must be aware of his great responsibility and every Commanding Officer must be able to say that he has conducted operations with every effort and tenacity in order to attain our important goal. I know that operations for you out there at the moment are some of the hardest and most costly in losses, since the enemy's defence at the moment is superior in view of new technical methods. Believe me, I have done everything and will continue to do so, in order to introduce means to counter this enemy advance. The time will soon come in which you will be superior to the enemy with new and stronger weapons and will be able to triumph over your worst enemies, the aircraft and the destroyer.

In the meantime we must master the situation with the measures already ordered and with a partial change in operational areas. We will, therefore, not allow ourselves to be forced into the defensive and will not rest but, where there is an opportunity, continue to strike and fight on with still more fortitude and decision in order to make ourselves even stronger for the decisive Battle of the North Atlantic, which will be carried out shortly with improved weapons, in the area most vulnerable for the enemy.

We will then be the victors, - my faith in our boats and in you convinces me of this.

Heil Hitler,
Commander in Chief
Dönitz

From O.K.W.:
a) At Peenemünde, before Hermann Göring, Erhard Milch, and other top German leaders, a A-4 rocket (V-2) and a flying bomb (V-1) were tested. The A-4 rocket flew perfectly, while the flying bomb crashed only after a mile or two of flight.
b) Starting at about 0200 hours, 759 British heavy bombers attacked Düsseldorf.
c) The Red Army launched an offensive against our troops in the Kuban bridgehead between the Sea of Azov and the Black Sea.

B-Dienst Report:
a) Auxiliary Aircraft Carrier USS Bogue (CVE-9) and her task group arrived at Argentia, Newfoundland.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Thursday, 27 May 1943 - Middle Atlantic

0000 - Wind and Sea increasing, shifting North: N4/3, partly cloudy, light haze, medium visibility, >1000mb.

0950 - Early Morning Dawn. NW6/5, medium swell, clear, good visibility, >1000mb.

1052 - Sunrise.

1200 - Qu.8728ES - Days Run: 195.5nm - ↗ (24h)
Total: 4222.3nm (22tg 22h) - ↗ 4059.7nm (20tg 11h 24') - ↘ 162.6nm (2tg 10h 36')
452cbm (3cbm in 24h); Course 161°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged since Morning Dawn.

1335 - 4000m from the Supply Boat position, nothing can be seen.

1340 - Diving to Reception Depth.

1540 - No sound contact of supply boat. Surfaced after 2h and 5.2nm. Weather and Sea unchanged in 6h.

1541 - Boat ventilated.

1548 - Qu.8759ES - Course 270°.

Standing up and down in ordered supply area. Nothing seen of supply boat.

2309 - Sundown. Weather and Sea unchaned in 13h.

RST
KorvKpt.& Cmdr. U 115
__________________
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Old 05-28-23, 07:32 AM   #443
Kapitän
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Default U 115 - First War Patrol (2nd leg) - Black May - New B.d.U.-Orders

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Thursday, 27 May 1943 - Middle Atlantic

0000 - Wind and Sea increasing, shifting North: N4/3, partly cloudy, light haze, medium visibility, >1000mb.

0950 - Early Morning Dawn. NW6/5, medium swell, clear, good visibility, >1000mb.

1052 - Sunrise.

1200 - Qu.8728ES - Days Run: 195.5nm - ↗ (24h)
Total: 4222.3nm (22tg 22h) - ↗ 4059.7nm (20tg 11h 24') - ↘ 162.6nm (2tg 10h 36')
452cbm (3cbm in 24h); Course 161°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; Weather and Sea unchanged since Morning Dawn.

1335 - 4000m from the Supply Boat position, nothing can be seen.

1340 - Diving to Reception Depth.

1540 - No sound contact of supply boat. Surfaced after 2h and 5.2nm. Weather and Sea unchanged in 6h.

1541 - Boat ventilated.

1548 - Qu.8759ES - Course 270°.

Standing up and down in ordered supply area. Nothing seen of supply boat.

2309 - Sundown. Weather and Sea unchaned in 13h.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Friday, 28 May 1943 - Southwest of Freetown

0258 - Qu.8756ES - NW7/6, overcast, rain, poor visibility, <1000mb - Running off on course 90°.

0300 - Diving due to poor visibility. Submerged cruise at Reception Depth.

0755 - Qu.8765ES - CO₂ Warning at 1.7%.

1057 - S-Tiefe. It has cleared up but there is still a medium swell. CO₂ is 2.2%.

1100 - Surfaced after 20.9nm and 8h.
NNW7/6, medium swell, clear, light haze, medium visibility, >1000mb.

1101 - Boat ventilated. 2x225RPM/8kn.

1200 - Qu.8844ES - Days Run: 120.5nm - ↗ 94.4nm (14h) - ↘ 26.1nm (10')
Total: 4342.8nm (23tg 22h) - ↗ 4154.1nm (21tg 01h 24') - ↘ 188.7nm (2tg 20h 36')
450.5cbm (1.5cbm in 24h); Battery 80%; Course 90°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold
NE7/6, medium swell, clear, light haze, medium visibility, >1000mb

1215 - Outgoing F.T.: To B.d.U.:
Supply boat not found. 450cbm. NE7/6, medium swell, clear, light haze, medium visibility, >1000mb. Moving off to the East. - RST -

1230 - Qu.8845ES - Course 180°.

1320 - Qu.8848ES - Course 270°. Heading back to the supply area.

1729 - Qu.8759ES - E7/6, medium swell, clear, light haze, medium visibility, >1000mb - Course 340°.

1834 - Course 270°. No sight of supply boat.

2118 - Qu.8746ES - NE7/6, medium swell, clear, light haze, medium visibility, >1000mb.

2307 - Incoming Radio Reports:

From O.K.W.:
a) Yesterday, fourteen Mosquito bombers from RAF Marham, conducted a daylight raid on the Zeiss optical instrument plant at Jena, some 45 miles from Leipzig. Despite losing three aircraft over the target and two others written off whilst attempting to land on their return, the operation had caused some damage to the works.
b) The 15th US Airforce attacked the Oil Refineries in Livorno, Italy.

From. B.d.U.:

B.d.U.-Standing Order No. 42 from 27 May 1943:

a) Only a plot drawn up accurately with every report on the enemy and the enemy route marked in enables one to find a convoy quickly and operate successfully against it.
b) The first night of operations always promises the best chance of success. Therefore, try to fire as quickly as possible when the convoy is reached.
c) On moonlight nights the enemy appears to protect primarily the side away from the moon. Attacks from the moon side, therefore, are more likely to be successful in many cases, also in view of less danger of location.
d) Always try to escape on the surface from locating escort vessels, since the enemy usually breaks off the chase quickly and cannot leave the convoy for too long.
e) Try to ward off escort aircraft if possible at once, if Flak guns are ready for action, but above all before dark in order not to lose valuable chances of attack.
f) Only submerge in view of aircraft if the boat can with certainty reach at least 80-100 m. If there is any doubt remain surfaced and ward off attack. Train the crew for this and keep in mind the danger of being bombed at low diving depth.
g) Make every effort to eliminate the possibilities of surprise attacks while underway and in position. Either proceed with main engine running, in order to hear aircraft beforehand, or submerge in unfavorable weather conditions.
h) In some cases decoy depth charges were again dropped with great success. Do not be deceived by these but go to periscope depth as quickly as possible, if there are no hydrophone fixes, and investigate.
j) If the convoy frequency is very busy use alternative wave lengths.

2315 - Sundown. Weather and Sea unchanged in 2h.

RST
KorvKpt.& Cmdr. U 115
__________________
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Old 05-29-23, 07:53 AM   #444
Kapitän
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Default U 115 - First War Patrol (2nd leg) - "Milkcow" not found

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Friday, 28 May 1943 - Southwest of Freetown

0258 - Qu.8756ES - NW7/6, overcast, rain, poor visibility, <1000mb - Running off on course 90°.

0300 - Diving due to poor visibility. Submerged cruise at Reception Depth.

0755 - Qu.8765ES - CO₂ Warning at 1.7%.

1057 - S-Tiefe. It has cleared up but there is still a medium swell. CO₂ is 2.2%.

1100 - Surfaced after 20.9nm and 8h.
NNW7/6, medium swell, clear, light haze, medium visibility, >1000mb.

1101 - Boat ventilated. 2x225RPM/8kn.

1200 - Qu.8844ES - Days Run: 120.5nm - ↗ 94.4nm (14h) - ↘ 26.1nm (10')
Total: 4342.8nm (23tg 22h) - ↗ 4154.1nm (21tg 01h 24') - ↘ 188.7nm (2tg 20h 36')
450.5cbm (1.5cbm in 24h); Battery 80%; Course 90°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold
NE7/6, medium swell, clear, light haze, medium visibility, >1000mb

1215 - Outgoing F.T.: To B.d.U.:
Supply boat not found. 450cbm. NE7/6, medium swell, clear, light haze, medium visibility, >1000mb. Moving off to the East. - RST -

1230 - Qu.8845ES - Course 180°.

1320 - Qu.8848ES - Course 270°. Heading back to the supply area.

1729 - Qu.8759ES - E7/6, medium swell, clear, light haze, medium visibility, >1000mb - Course 340°.

1834 - Course 270°. No sight of supply boat.

2118 - Qu.8746ES - NE7/6, medium swell, clear, light haze, medium visibility, >1000mb.

2307 - Incoming Radio Reports:

From O.K.W.:
a) Yesterday, fourteen Mosquito bombers from RAF Marham, conducted a daylight raid on the Zeiss optical instrument plant at Jena, some 45 miles from Leipzig. Despite losing three aircraft over the target and two others written off whilst attempting to land on their return, the operation had caused some damage to the works.
b) The 15th US Airforce attacked the Oil Refineries in Livorno, Italy.

From. B.d.U.:

B.d.U.-Standing Order No. 42 from 27 May 1943:

a) Only a plot drawn up accurately with every report on the enemy and the enemy route marked in enables one to find a convoy quickly and operate successfully against it.
b) The first night of operations always promises the best chance of success. Therefore, try to fire as quickly as possible when the convoy is reached.
c) On moonlight nights the enemy appears to protect primarily the side away from the moon. Attacks from the moon side, therefore, are more likely to be successful in many cases, also in view of less danger of location.
d) Always try to escape on the surface from locating escort vessels, since the enemy usually breaks off the chase quickly and cannot leave the convoy for too long.
e) Try to ward off escort aircraft if possible at once, if Flak guns are ready for action, but above all before dark in order not to lose valuable chances of attack.
f) Only submerge in view of aircraft if the boat can with certainty reach at least 80-100 m. If there is any doubt remain surfaced and ward off attack. Train the crew for this and keep in mind the danger of being bombed at low diving depth.
g) Make every effort to eliminate the possibilities of surprise attacks while underway and in position. Either proceed with main engine running, in order to hear aircraft beforehand, or submerge in unfavorable weather conditions.
h) In some cases decoy depth charges were again dropped with great success. Do not be deceived by these but go to periscope depth as quickly as possible, if there are no hydrophone fixes, and investigate.
j) If the convoy frequency is very busy use alternative wave lengths.

2315 - Sundown. Weather and Sea unchanged in 2h.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Saturday, 29 May 1943 - Middle Atlantic

0025 - Qu.7966ES -

0033 - As contact with the Supply Boat cannot be established and the weather report does not suggest any improvement of the seastate any time soon, decision is made to continue with the outbound transit. Running off on southerly heading. 2x225RPM/8kn.

0121 - Qu.7969ES - Course 169°.

0700 - Qu.2141FD - Diving for Torpedo Maintenance and Trial Dive.

0705 - T=50. Beginning torpedo maintenance.

0756 - Tube I serviced.

0814 - Tube II pulled - Watch Change at 0808 -

0848 - Tube II serviced.

0939 - Tube III serviced (Tubes I-III are T-3/Pi39H). - Break until 1000 -

1051 - Tube V serviced (EtoFat/Pi39H). - Break until 1100 -

1109 - Sunrise.

1151 - Tube VI serviced (T-4/Pi39H). CO₂ Warning at 1.7% (after 4h 51min.). Submerged cruise at A-20.

1200 - Qu.2148FD - Days Run: 151.7nm - ↗ 138.7nm (19h) - ↘ 13.0nm (5h)
Total: 4494.5nm (24tg 22h) - ↗ 4292.8nm (21tg 20h 24') - ↘ 201.7nm (3tg 01h 36')
448.5cbm (2cbm in 24h); Battery 71.4%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; T=A-20; CO₂ =1.7%. - Lunch Break -

1257 - S-Tiefe. Weather and Sea unchanged.

1300 - Reception Depth. Beginning of Trial Dive acc. B.d.U. Standing Order No.507 & No.308. 145rpm/3kn.

1340 - Boat is safe and secure at 2A-Meter. Setting for T=20 with 96rpm.

1357 - Boat rises to T=19.5m. (17min. for 140m).

1400 - Weather and Sea appear to be unchanged. Battery 65.7%; Compressed Air Supply 265 Atü; CO₂ 2%.

1405 - Surfaced after 2h 05' and 6.2nm - since Etmal (Total: 7h 05' and 19.2nm). - N6/5, medium swell, clear, good visibility, >1000mb.

1410 - Boat ventilated and Compressed Air Supply filled.

1415 - Qu.2172FD - Charging batteries (65.7%): Stbd.-Charging, 496RPM; Port-Propulsion, 285RPM/8kn.

1710 - Batteries charged => 2h 55min. for 34.3%. 2xSmall-Ahead/185RPM/7kn.

2005 - Qu.2443FD - NW1/1, clear, very good visibility, >1000mb - Crash dive for training. T=10 after 39 Sec.

2007 - A-Meter.

2010 - Setting for T=20 at 96rpm.

2019 - Reception Depth (9min. for 60m). Battery 97%.

2025 - Surfaced after 20min. and 1.1nm. - WNW1/1, clear, very good visibility, >1000mb.

2028 - Compressed Air Supply filled.

2030 - Test Run of main diesels acc. B.d.U.-Standing Order No.510. - 2xSmall-Ahead/185RPM/6.8kn.

2030 - 285RPM/1/3-Ahead/10.6kn.

2035 - 375RPM/2xH.F./13.4kn.

2040 - 455RPM/Full-Ahead/16.5kn.

2045 - 496RPM/A.K./18.3kn/30min.

2115 - Reducing speed in speed settings of 5min. decrements.

2130 - 2x225RPM/8kn.

2306 - Incoming Radio Reports:

O.K.W.-Report:
a) Major air raid by the RAF against Wuppertal with 1,900 tons of explosives. The British claim that half of the city has been destroyed. There were many civilian casualties.

From B.d.U.:
a) In order to make it difficult for enemy aircraft in the Biscay area to find U-boats and in order, in case of enemy air attacks, to be able to counter the enemy when surfaced, which has proved to be most practical , with heavy and successful gunfire, all boats returning in a position W. of 16° should continue the return passage together, through the Biscay area in Groups up to 4 boats.
b) U 707 (Oblt. Günther Gretschel) which is able to submerge and is proceeding with U 952 (Oblt. Oskar Curio) will be closely escorted on the 30th May by 5 Ju. 88 until met by escorts.
c) Since U 128 (Oblt. Hermann Steinert; ex Heyse) did not arrive for refueling she must be considered lost.

2322 - Sundown. Weather and Sea unchanged in 3h.

RST
KorvKpt.& Cmdr. U 115
__________________
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Old 05-30-23, 09:10 AM   #445
Kapitän
The Old Man
 
Join Date: Mar 2010
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Default U 115 - First War Patrol (2nd leg) - Equator Crossing

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Saturday, 29 May 1943 - Middle Atlantic

0025 - Qu.7966ES -

0033 - As contact with the Supply Boat cannot be established and the weather report does not suggest any improvement of the seastate any time soon, decision is made to continue with the outbound transit. Running off on southerly heading. 2x225RPM/8kn.

0121 - Qu.7969ES - Course 169°.

0700 - Qu.2141FD - Diving for Torpedo Maintenance and Trial Dive.

0705 - T=50. Beginning torpedo maintenance.

0756 - Tube I serviced.

0814 - Tube II pulled - Watch Change at 0808 -

0848 - Tube II serviced.

0939 - Tube III serviced (Tubes I-III are T-3/Pi39H). - Break until 1000 -

1051 - Tube V serviced (EtoFat/Pi39H). - Break until 1100 -

1109 - Sunrise.

1151 - Tube VI serviced (T-4/Pi39H). CO₂ Warning at 1.7% (after 4h 51min.). Submerged cruise at A-20.

1200 - Qu.2148FD - Days Run: 151.7nm - ↗ 138.7nm (19h) - ↘ 13.0nm (5h)
Total: 4494.5nm (24tg 22h) - ↗ 4292.8nm (21tg 20h 24') - ↘ 201.7nm (3tg 01h 36')
448.5cbm (2cbm in 24h); Battery 71.4%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; T=A-20; CO₂ =1.7%. - Lunch Break -

1257 - S-Tiefe. Weather and Sea unchanged.

1300 - Reception Depth. Beginning of Trial Dive acc. B.d.U. Standing Order No.507 & No.308. 145rpm/3kn.

1340 - Boat is safe and secure at 2A-Meter. Setting for T=20 with 96rpm.

1357 - Boat rises to T=19.5m. (17min. for 140m).

1400 - Weather and Sea appear to be unchanged. Battery 65.7%; Compressed Air Supply 265 Atü; CO₂ 2%.

1405 - Surfaced after 2h 05' and 6.2nm - since Etmal (Total: 7h 05' and 19.2nm). - N6/5, medium swell, clear, good visibility, >1000mb.

1410 - Boat ventilated and Compressed Air Supply filled.

1415 - Qu.2172FD - Charging batteries (65.7%): Stbd.-Charging, 496RPM; Port-Propulsion, 285RPM/8kn.

1710 - Batteries charged => 2h 55min. for 34.3%. 2xSmall-Ahead/185RPM/7kn.

2005 - Qu.2443FD - NW1/1, clear, very good visibility, >1000mb - Crash dive for training. T=10 after 39 Sec.

2007 - A-Meter.

2010 - Setting for T=20 at 96rpm.

2019 - Reception Depth (9min. for 60m). Battery 97%.

2025 - Surfaced after 20min. and 1.1nm. - WNW1/1, clear, very good visibility, >1000mb.

2028 - Compressed Air Supply filled.

2030 - Test Run of main diesels acc. B.d.U.-Standing Order No.510. - 2xSmall-Ahead/185RPM/6.8kn.

2030 - 285RPM/1/3-Ahead/10.6kn.

2035 - 375RPM/2xH.F./13.4kn.

2040 - 455RPM/Full-Ahead/16.5kn.

2045 - 496RPM/A.K./18.3kn/30min.

2115 - Reducing speed in speed settings of 5min. decrements.

2130 - 2x225RPM/8kn.

2306 - Incoming Radio Reports:

O.K.W.-Report:
a) Major air raid by the RAF against Wuppertal with 1,900 tons of explosives. The British claim that half of the city has been destroyed. There were many civilian casualties.

From B.d.U.:
a) In order to make it difficult for enemy aircraft in the Biscay area to find U-boats and in order, in case of enemy air attacks, to be able to counter the enemy when surfaced, which has proved to be most practical , with heavy and successful gunfire, all boats returning in a position W. of 16° should continue the return passage together, through the Biscay area in Groups up to 4 boats.
b) U 707 (Oblt. Günther Gretschel) which is able to submerge and is proceeding with U 952 (Oblt. Oskar Curio) will be closely escorted on the 30th May by 5 Ju. 88 until met by escorts.
c) Since U 128 (Oblt. Hermann Steinert; ex Heyse) did not arrive for refueling she must be considered lost.

2322 - Sundown. Weather and Sea unchanged in 3h.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Sunday, 30 May 1943 - Northeast of Brazil

0445 - Qu.2785FD - Crossing Equator -

Outgoing F.T.: To B.d.U.:
After standing up and down for 3 days, supply boat still not found. Continued outbound transit. Switching to Circuit Afrika-I. 6 eels. 447 cbm. WNW1/1, clear, very good visibility, >1000mb.

1006 - Incoming Radio Report: From B.d.U.:

The orders given, in view of the new situation, for the protection of boats against surprise aircraft attacks are summarized as follows in B.d.U.-Standing Order No. 13:

The danger of surprise by locating aircraft, particularly by night is great. The following basic principles should be observed by the boats: be as careful as possible while under way and at waiting positions - avoid losses. If the enemy is sighted then go into operation with courage and tenacity in spite of danger from aircraft, remain surfaced and ward off attacks of aircraft when necessary. It is, therefore, ordered that:
1) U-boats approaching and returning from the Biscay area up to 18° W and in the approach area home North Atlantic up to and including square AL, upper third, will proceed submerged as a general rule. They will surface only for charging the battery and ventilating the boat and only by day. Surface run by day is permissible only in very good visibility which excludes the possibility of surprise. Boats should proceed surfaced as a rule on incoming routes. Only submerge when danger of aircraft is acute. Boats will proceed out in the morning and in at evening, so that the incoming route is passed by day. See Standing Order 483, Section D 1.
2) Special instructions will follow regarding passage of several boats together.
3) Procedure in the operational area North Atlantic, i.e. AL, lower and middle third, AK, AD, AJ, BC, BD, north half BE, CG, CF east half, under way and when stopped in position.
a) By night: One main engine slow to half speed and the other Diesel engine ready to start up, boat's ventilator switched off. Reason: to detect aircraft approaching by means of hydrophone.
b) By day: With higher cruising speed than before confirm that the boats is maneuverable and able to dive.
c) If weather conditions are unfavorable, proceed only submerged by day and night.
4) Procedure in coastal area os America, the Caribbean, middle and South Atlantic according to situation and decision of the Commanding Officer.
5) When operating against the enemy no restrictions as to surface run, attack is the most important factor.
6) When proceeding on the surface always keep radar interception apparatus and Flak guns ready for action and manned.
7) B.d.U.-Standing Order No. 483, Section a) Fig. 2 and Section C) invalid at present. Carry out correction in pencil. B.d.U.-Standing Order No. 13, dated April 1943 and admonitory radio message 2303/22/48/165/259/379/416/718/845 is therefore invalid and should be destroyed.
8) In message to O.K.M., O.K.W. is reporting that development of new FuMB-Technology and Accoustic Torpedoes is continuing with highest priority.

1025 - Early Morning Dawn. 1/4-Moon in the East.

1122 - Sunrise. SW1/1, clear, very good visibility, >1000mb.

1149 - All engines stop. Manning flak guns (still outside of Ascension Island air cover zone) - Equator-Crossing Ceremony -

1200 - Qu.5194FD - Days Run: 187.9nm - ↗ 180.6nm (21h 35') - ↘ 7.3nm (2h 25')
Total: 4682.4 (25tg 22h) - ↗ 4473.4nm (22tg 17h 59') - ↘ 209.0nm (3tg 04h 01')
447cbm (1.5cbm in 24h); Battery 97%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSW1/1, clear, very good visibility, >1000mb.

1400 - Continuing outbound transit. 2x225RPM/8kn.

2000 - SE5/4, clear, very good visibility, >1000mb.

2321 - Sundown.

RST
KorvKpt.& Cmdr. U 115
__________________
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Old 05-31-23, 11:03 AM   #446
Kapitän
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Default U 115 - First War Patrol (2nd leg) - Black May

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Sunday, 30 May 1943 - Northeast of Brazil

0445 - Qu.2785FD - Crossing Equator -

Outgoing F.T.: To B.d.U.:
After standing up and down for 3 days, supply boat still not found. Continued outbound transit. Switching to Circuit Afrika-I. 6 eels. 447 cbm. WNW1/1, clear, very good visibility, >1000mb.

1006 - Incoming Radio Report: From B.d.U.:

The orders given, in view of the new situation, for the protection of boats against surprise aircraft attacks are summarized as follows in B.d.U.-Standing Order No. 13:

The danger of surprise by locating aircraft, particularly by night is great. The following basic principles should be observed by the boats: be as careful as possible while under way and at waiting positions - avoid losses. If the enemy is sighted then go into operation with courage and tenacity in spite of danger from aircraft, remain surfaced and ward off attacks of aircraft when necessary. It is, therefore, ordered that:
1) U-boats approaching and returning from the Biscay area up to 18° W and in the approach area home North Atlantic up to and including square AL, upper third, will proceed submerged as a general rule. They will surface only for charging the battery and ventilating the boat and only by day. Surface run by day is permissible only in very good visibility which excludes the possibility of surprise. Boats should proceed surfaced as a rule on incoming routes. Only submerge when danger of aircraft is acute. Boats will proceed out in the morning and in at evening, so that the incoming route is passed by day. See Standing Order 483, Section D 1.
2) Special instructions will follow regarding passage of several boats together.
3) Procedure in the operational area North Atlantic, i.e. AL, lower and middle third, AK, AD, AJ, BC, BD, north half BE, CG, CF east half, under way and when stopped in position.
a) By night: One main engine slow to half speed and the other Diesel engine ready to start up, boat's ventilator switched off. Reason: to detect aircraft approaching by means of hydrophone.
b) By day: With higher cruising speed than before confirm that the boats is maneuverable and able to dive.
c) If weather conditions are unfavorable, proceed only submerged by day and night.
4) Procedure in coastal area os America, the Caribbean, middle and South Atlantic according to situation and decision of the Commanding Officer.
5) When operating against the enemy no restrictions as to surface run, attack is the most important factor.
6) When proceeding on the surface always keep radar interception apparatus and Flak guns ready for action and manned.
7) B.d.U.-Standing Order No. 483, Section a) Fig. 2 and Section C) invalid at present. Carry out correction in pencil. B.d.U.-Standing Order No. 13, dated April 1943 and admonitory radio message 2303/22/48/165/259/379/416/718/845 is therefore invalid and should be destroyed.
8) In message to O.K.M., O.K.W. is reporting that development of new FuMB-Technology and Accoustic Torpedoes is continuing with highest priority.

1025 - Early Morning Dawn. 1/4-Moon in the East.

1122 - Sunrise. SW1/1, clear, very good visibility, >1000mb.

1149 - All engines stop. Manning flak guns (still outside of Ascension Island air cover zone) - Equator-Crossing Ceremony -

1200 - Qu.5194FD - Days Run: 187.9nm - ↗ 180.6nm (21h 35') - ↘ 7.3nm (2h 25')
Total: 4682.4 (25tg 22h) - ↗ 4473.4nm (22tg 17h 59') - ↘ 209.0nm (3tg 04h 01')
447cbm (1.5cbm in 24h); Battery 97%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSW1/1, clear, very good visibility, >1000mb.

1400 - Continuing outbound transit. 2x225RPM/8kn.

2000 - SE5/4, clear, very good visibility, >1000mb.

2321 - Sundown.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Monday, 31 May 1943 - South Atlantic

0815 - Qu.8218FD - Reached the Air Cover Zone of Ascension Island.

1040 - Early Morning Dawn. 7/8 Moon in the East.

1133 - Sunrise. Weather and Sea unchanged in 15.5h.

1200 - Qu.8276FD - Days Run: 172.8nm - ↗ (24h)
Total: 4855.2 (26tg 22h) - ↗ 4646.2nm (23tg 17h 59') - ↘ 209.0nm (3tg 04h 01')
445cbm (2cbm in 24h); Battery 97%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSW1/1, clear, very good visibility, >1000mb.

1313 - Qu.8279FD - Crash dive for training. T=10 after 41 Sec. (w/o Diving Officer).

1316 - A-Meter.

1320 - Setting for T=20 at 96rpm.

1329 - Leveled-off at Reception Depth (9min. for 60m). Battery 97%; Compressed Air Supply 280Atü.

1333 - Surfaced after 20min. and 1.2nm. - Weather and Sea unchanged.

1337 - Compressed Air Supply filled. 2x225RPM/8kn.

1533 - Qu.8527FD - Crash dive for training. T=10 after 42 Sec. (w/o Diving Officer).

1535 - A-Meter.

1540 - Setting for T=20 at 96rpm.

1548 - Leveled-off at Reception Depth (8min. for 60m). Battery 94%; Compressed Air Supply 280Atü.

1553 - Surfaced after 20min. and 1.2nm. - SSE6/5, clear, very good visibility, >1000mb.

1556 - Compressed Air Supply filled. 2x225RPM/8kn.

2307 - Incoming Radio Reports:

From O.K.W.:
a) The US 15th Airforce attacked German and Italian airports at Foggia and claim that many airplanes were destroyed on the ground.

From O.K.M.:
a) The Führer expressed extreme dismay at the withdrawal of our submarines from the American coast.
b) In Operation Gearbox II, HMS Cumberland joined HMS Cruiser Bermuda to relieve garrison at Spitzbergen, Norway, escorted by Destroyers HMS Eclipse and HMS Athabaskan (RCN) covered by Aircraft Carrier HMS Furious, Cruiser HMS Scylla, screened by Destroyers HMS Echo and HMS Middleton.

From B.d.U.:
a) U 563 (Oblt. Gustav Borchardt) was bombed by aircraft at 1650 in BF 4466. The boat was able to dive and requested air cover. Later she was attacked again and sent a distress message by radio. Boats in the vicinity were ordered to give assistance. Of these boats, U 621 (Oblt. Max Kruschka) reported going to assist U 563. On the way, U 621 was also bombed and has only limited diving capacity.
It appears from a decoded aircraft message, that U 563 was sunk and the crew swimming in the water. U 621 broke off the search towards morning in view of fuel shortage. Our own aircraft could not be sent in owing to bad weather conditions, however, the first formation of Junkers, consisting of 8 airplanes, will be sent starting at 0700 on 1st June. The aircraft will take rubber boats with them, which can be dropped if necessary.
b) U 467 (Kptlt. Heinz Kummer) has not reported since putting out from Bergen. After receipt of a special intercept message of 29th May regarding an aircraft attack on a U-boat in AE 58 with a Mark 24 FIDO acoustic homing torpedo from a PBY-5A Catalina, the boat was ordered several times to give her position but did not reply. According to dead reckoning, she was in the proximity of the attack position. She must be considered lost.

B-Dienst Report:
a) Auxiliary Aircraft Carrier USS Bogue (CVE-9) and her escorts departed Argentia, Newfoundland on a purely offensive anti-submarine patrol. This is Bogue's first Hunter-Killer sortie without concurrent convoy escort duty.

2322 - Sundown. Weather and Sea unchanged in 7.5h.

RST
KorvKpt.& Cmdr. U 115
__________________
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Old 06-01-23, 06:52 AM   #447
Kapitän
The Old Man
 
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Default U 115 - First War Patrol (2nd leg) - German Agent arrested in Brazil

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Monday, 31 May 1943 - South Atlantic

0815 - Qu.8218FD - Reached the Air Cover Zone of Ascension Island.

1040 - Early Morning Dawn. 7/8 Moon in the East.

1133 - Sunrise. Weather and Sea unchanged in 15.5h.

1200 - Qu.8276FD - Days Run: 172.8nm - ↗ (24h)
Total: 4855.2 (26tg 22h) - ↗ 4646.2nm (23tg 17h 59') - ↘ 209.0nm (3tg 04h 01')
445cbm (2cbm in 24h); Battery 97%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSW1/1, clear, very good visibility, >1000mb.

1313 - Qu.8279FD - Crash dive for training. T=10 after 41 Sec. (w/o Diving Officer).

1316 - A-Meter.

1320 - Setting for T=20 at 96rpm.

1329 - Leveled-off at Reception Depth (9min. for 60m). Battery 97%; Compressed Air Supply 280Atü.

1333 - Surfaced after 20min. and 1.2nm. - Weather and Sea unchanged.

1337 - Compressed Air Supply filled. 2x225RPM/8kn.

1533 - Qu.8527FD - Crash dive for training. T=10 after 42 Sec. (w/o Diving Officer).

1535 - A-Meter.

1540 - Setting for T=20 at 96rpm.

1548 - Leveled-off at Reception Depth (8min. for 60m). Battery 94%; Compressed Air Supply 280Atü.

1553 - Surfaced after 20min. and 1.2nm. - SSE6/5, clear, very good visibility, >1000mb.

1556 - Compressed Air Supply filled. 2x225RPM/8kn.

2307 - Incoming Radio Reports:

From O.K.W.:
a) The US 15th Airforce attacked German and Italian airports at Foggia and claim that many airplanes were destroyed on the ground.

From O.K.M.:
a) The Führer expressed extreme dismay at the withdrawal of our submarines from the American coast.
b) In Operation Gearbox II, HMS Cumberland joined HMS Cruiser Bermuda to relieve garrison at Spitzbergen, Norway, escorted by Destroyers HMS Eclipse and HMS Athabaskan (RCN) covered by Aircraft Carrier HMS Furious, Cruiser HMS Scylla, screened by Destroyers HMS Echo and HMS Middleton.

From B.d.U.:
a) U 563 (Oblt. Gustav Borchardt) was bombed by aircraft at 1650 in BF 4466. The boat was able to dive and requested air cover. Later she was attacked again and sent a distress message by radio. Boats in the vicinity were ordered to give assistance. Of these boats, U 621 (Oblt. Max Kruschka) reported going to assist U 563. On the way, U 621 was also bombed and has only limited diving capacity.
It appears from a decoded aircraft message, that U 563 was sunk and the crew swimming in the water. U 621 broke off the search towards morning in view of fuel shortage. Our own aircraft could not be sent in owing to bad weather conditions, however, the first formation of Junkers, consisting of 8 airplanes, will be sent starting at 0700 on 1st June. The aircraft will take rubber boats with them, which can be dropped if necessary.
b) U 467 (Kptlt. Heinz Kummer) has not reported since putting out from Bergen. After receipt of a special intercept message of 29th May regarding an aircraft attack on a U-boat in AE 58 with a Mark 24 FIDO acoustic homing torpedo from a PBY-5A Catalina, the boat was ordered several times to give her position but did not reply. According to dead reckoning, she was in the proximity of the attack position. She must be considered lost.

B-Dienst Report:
a) Auxiliary Aircraft Carrier USS Bogue (CVE-9) and her escorts departed Argentia, Newfoundland on a purely offensive anti-submarine patrol. This is Bogue's first Hunter-Killer sortie without concurrent convoy escort duty.

2322 - Sundown. Weather and Sea unchanged in 7.5h.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Tuesday, 1 June 1943 - West of Ascension

- 4th week at sea completed -

0900 - Qu.1348FL -

1045 - Early Morning Dawn. 7/8-Moon setting in the East.

1139 - Sunrise. Weather and Sea unchanged in 20h.

1200 - Qu.1613FL - Days Run: 186.8nm - ↗ 184.4nm (23h 20') - ↘ 2.4nm (40')
Total: 5042.0 (27tg 22h) - ↗ 4830.6nm (24tg 17h 19') - ↘ 211.4nm (3tg 04h 41')
442.5cbm (2.5cbm in 24h); Battery 94%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSE6/5, clear, very good visibility, >1000mb.

1306 - Qu.1616FL - Crash dive for training. T=10 after 39 Sec. (1st Watch with Diving Officer).

1309 - A-Meter.

1310 - Setting for T=20 at 96rpm.

1319 - Leveled-off at Reception Depth (9min. for 60m). Battery 94%; Compressed Air Supply 280Atü.

1323 - Surfaced after 17min. and 1.1nm.

1327 - Compressed Air Supply filled. 2x225RPM/8kn.

1606 - Qu.1657FL - Crash dive for training. T=10 after 39 Sec. (2nd Watch with Diving Officer).

1609 - A-Meter.

1610 - Setting for T=20 at 96rpm.

1619 - Leveled-off at Reception Depth (9min. for 60m). Battery 93%; Compressed Air Supply 280Atü.

1623 - Surfaced after 17min. and 1.1nm.

1626 - Compressed Air Supply filled. 2x225RPM/8kn.

2026 - Qu.1925FL - Crash dive for training. T=10 after 41+ Sec. (3rd Watch with Diving Officer).

2029 - A-Meter.

2030 - Setting for T=20 at 96rpm.

2039 - Leveled-off at Reception Depth (9min. for 60m). Battery 91.5%; Compressed Air Supply 280Atü.

2043 - Surfaced after 17min. and 1.1nm.

2046 - Compressed Air Supply filled. 2x225RPM/8kn.

2306 - Incoming Radio Reports:

From O.K.W.:
a) The Russian Airforce attacked rear communications and airfields at Smolensk, Orel and Bryansk.
b) British Foreign Minister Anthony Eden announced that British casualties in first three years of war were 92,089 killed, 226,719 missing, 88,294 wounded, and 107,891 captured.
c) While serving time in prison for embezzlement, Fritz Kuhn, leader of the dissolved, pro-Nazi, German American Bund, has his American citizenship rewoked.

From B.d.U.:
a) In search of U 563 (Oblt. Gustav Borchardt), 23 Ju 88's carried out a search without result. Sea was force 5. Nothing was seen of the crew. In air battles the Ju's shot down 4 English aircraft, including 2 Wellington bombers and one large carrier aircraft (Douglas).
b) U 409 (Oblt. Hanns-Ferdinand Massmann) was observed in CG 9472 during her passage through the Straits of Gibraltar. She was ordered to move away to the W and attempt to break through again after about 48 hours. The same goes for U 594 (Kptlt. Friedrich Mumm).

B-Dienst Report:
a) Auxiliary Aircraft Carrier USS Card (CVE-11) arrived in Casablanca Harbor, Morocco.
b) Alerted by US direction-finders, the Brazilian police raid the house of German-born Werner Waltemath discovering his Abwehr radio, microfilm and other espionage paraphernalia hidden in a cavity under the living room floor. He will receive a twenty-five-year prison sentence, while a fellow–expatriate, Hans-Christian von Kitze, whom he had recruited to his spy group will become a double agent for the British.

RST
KorvKpt.& Cmdr. U 115
__________________
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Old 06-02-23, 04:05 AM   #448
Kapitän
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Join Date: Mar 2010
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Default U 115 - First War Patrol (2nd leg) - Stalemate on the Eastern Front

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Tuesday, 1 June 1943 - West of Ascension

- 4th week at sea completed -

0900 - Qu.1348FL -

1045 - Early Morning Dawn. 7/8-Moon setting in the East.

1139 - Sunrise. Weather and Sea unchanged in 20h.

1200 - Qu.1613FL - Days Run: 186.8nm - ↗ 184.4nm (23h 20') - ↘ 2.4nm (40')
Total: 5042.0 (27tg 22h) - ↗ 4830.6nm (24tg 17h 19') - ↘ 211.4nm (3tg 04h 41')
442.5cbm (2.5cbm in 24h); Battery 94%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSE6/5, clear, very good visibility, >1000mb.

1306 - Qu.1616FL - Crash dive for training. T=10 after 39 Sec. (1st Watch with Diving Officer).

1309 - A-Meter.

1310 - Setting for T=20 at 96rpm.

1319 - Leveled-off at Reception Depth (9min. for 60m). Battery 94%; Compressed Air Supply 280Atü.

1323 - Surfaced after 17min. and 1.1nm.

1327 - Compressed Air Supply filled. 2x225RPM/8kn.

1606 - Qu.1657FL - Crash dive for training. T=10 after 39 Sec. (2nd Watch with Diving Officer).

1609 - A-Meter.

1610 - Setting for T=20 at 96rpm.

1619 - Leveled-off at Reception Depth (9min. for 60m). Battery 93%; Compressed Air Supply 280Atü.

1623 - Surfaced after 17min. and 1.1nm.

1626 - Compressed Air Supply filled. 2x225RPM/8kn.

2026 - Qu.1925FL - Crash dive for training. T=10 after 41+ Sec. (3rd Watch with Diving Officer).

2029 - A-Meter.

2030 - Setting for T=20 at 96rpm.

2039 - Leveled-off at Reception Depth (9min. for 60m). Battery 91.5%; Compressed Air Supply 280Atü.

2043 - Surfaced after 17min. and 1.1nm.

2046 - Compressed Air Supply filled. 2x225RPM/8kn.

2306 - Incoming Radio Reports:

From O.K.W.:
a) The Russian Airforce attacked rear communications and airfields at Smolensk, Orel and Bryansk.
b) British Foreign Minister Anthony Eden announced that British casualties in first three years of war were 92,089 killed, 226,719 missing, 88,294 wounded, and 107,891 captured.
c) While serving time in prison for embezzlement, Fritz Kuhn, leader of the dissolved, pro-Nazi, German American Bund, has his American citizenship rewoked.

From B.d.U.:
a) In search of U 563 (Oblt. Gustav Borchardt), 23 Ju 88's carried out a search without result. Sea was force 5. Nothing was seen of the crew. In air battles the Ju's shot down 4 English aircraft, including 2 Wellington bombers and one large carrier aircraft (Douglas).
b) U 409 (Oblt. Hanns-Ferdinand Massmann) was observed in CG 9472 during her passage through the Straits of Gibraltar. She was ordered to move away to the W and attempt to break through again after about 48 hours. The same goes for U 594 (Kptlt. Friedrich Mumm).

B-Dienst Report:
a) Auxiliary Aircraft Carrier USS Card (CVE-11) arrived in Casablanca Harbor, Morocco.
b) Alerted by US direction-finders, the Brazilian police raid the house of German-born Werner Waltemath discovering his Abwehr radio, microfilm and other espionage paraphernalia hidden in a cavity under the living room floor. He will receive a twenty-five-year prison sentence, while a fellow–expatriate, Hans-Christian von Kitze, whom he had recruited to his spy group will become a double agent for the British.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Wednesday, 2 June 1943 - South-Atlantic

0700 - Qu.4364FL - Diving for Torpedo Maintenance and Trial Dive.

0705 - T=50. Beginning torpedo maintenance.

0756 - Tube I serviced.

0814 - Tube II pulled - Watch Change at 0805 -

0848 - Tube II serviced.

0939 - Tube III serviced (Tubes I-III are T-3/Pi39H). - Break until 1000 -

1051 - Tube V serviced (EtoFat/Pi39H). - Break until 1100 -

1148 - Sunrise. CO₂ Warning at 1.7% (after 4h 48min.).

1151 - Tube VI serviced (T-4/Pi39H).

1158 - At Reception Depth.

1200 - Qu.4391FL - Days Run: 158.3nm - ↗ 142.0nm (18h 09') - ↘ 16.3nm (5h 51')
Total: 5200.3 (28tg 22h) - ↗ 4972.6nm (25tg 11h 28') - ↘ 227.7nm (3tg 10h 32')
441cbm (1.5cbm in 24h); Battery 82.9%; Course 169°; T=20; CO₂ = 1.8%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold. - Lunch Break -

1222 - A-20

1300 - Beginning of Trial Dive acc. B.d.U. Standing Order No.507 & No.308. 145rpm/3kn.

1341 - Boat is safe and secure at 2A-Meter.

1345 - Setting for T=20 with 96rpm.

1402 - Reception Depth. (21min. for 140m). Battery 77%; Compressed Air Supply 275 Atü; CO₂ 2.1%.

1410 - Surfaced after 2h 10' and 6.4nm - since Etmal (Total: 7h 10' and 19.4nm). Weather and Sea unchanged in 46h.

1414 - Boat ventilated and Compressed Air Supply filled.

2307 - Incoming Radio Reports:

From O.K.W.:
a) The Japanese are in full retreat from the Yangtze River.
b) The Russian Airforce attacked Kiev and Roslavl, while the Luftwaffe attacked Kursk.

From O.K.M.:
a) USAAF 99th Fighter Squadron made its combat debut with its P-40L fighters, strafing Italian positions on Pantelleria island southwest of Sicily, Italy.

From B.d.U.:
a) U 195 (IXD1; KrvKpt. Heinz Buchholz) situation report: nothing sighted in KZ 7558 - 24 - 16 - 15 - 19. Horizontal Radar location in KZ 1630, presumably aircraft. Return passage.
b) U 178 (IXD2; KrvKpt. Wilhelm Dommes) attacked the convoy, which she had already reported, on 1 June in KP 8779 and scored 2 hits. Boiler explosion probable. Effect not observed owing to heavy seas, as accurate depth keeping impossible.
c) U 667 (Kptlt. Heinrich-Andreas Schroeteler) beat off an attack by a Lockheed Hudson on 26.5. in AF 4915 and scored several hits on a Catalina on 29.5. in AE 6714 during an 80 minute action. No damage. No radar observed in either attack. 2 small sailing vessels observed on patrol in the Iceland Passage and 2 destroyers with deterrent D/c's.

2322 - Sundown. Weather and Sea unchanged in 55.5h.

RST
KorvKpt.& Cmdr. U 115
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Old 06-03-23, 06:33 AM   #449
Kapitän
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Default U 115 - First War Patrol (2nd leg) - New B.d.U.-Orders for passage through Biscay

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Wednesday, 2 June 1943 - South-Atlantic

0700 - Qu.4364FL - Diving for Torpedo Maintenance and Trial Dive.

0705 - T=50. Beginning torpedo maintenance.

0756 - Tube I serviced.

0814 - Tube II pulled - Watch Change at 0805 -

0848 - Tube II serviced.

0939 - Tube III serviced (Tubes I-III are T-3/Pi39H). - Break until 1000 -

1051 - Tube V serviced (EtoFat/Pi39H). - Break until 1100 -

1148 - Sunrise. CO₂ Warning at 1.7% (after 4h 48min.).

1151 - Tube VI serviced (T-4/Pi39H).

1158 - At Reception Depth.

1200 - Qu.4391FL - Days Run: 158.3nm - ↗ 142.0nm (18h 09') - ↘ 16.3nm (5h 51')
Total: 5200.3 (28tg 22h) - ↗ 4972.6nm (25tg 11h 28') - ↘ 227.7nm (3tg 10h 32')
441cbm (1.5cbm in 24h); Battery 82.9%; Course 169°; T=20; CO₂ = 1.8%; 3xT-3, 2xEtoFat, 1xT-4; 9xBold. - Lunch Break -

1222 - A-20

1300 - Beginning of Trial Dive acc. B.d.U. Standing Order No.507 & No.308. 145rpm/3kn.

1341 - Boat is safe and secure at 2A-Meter.

1345 - Setting for T=20 with 96rpm.

1402 - Reception Depth. (21min. for 140m). Battery 77%; Compressed Air Supply 275 Atü; CO₂ 2.1%.

1410 - Surfaced after 2h 10' and 6.4nm - since Etmal (Total: 7h 10' and 19.4nm). Weather and Sea unchanged in 46h.

1414 - Boat ventilated and Compressed Air Supply filled.

2307 - Incoming Radio Reports:

From O.K.W.:
a) The Japanese are in full retreat from the Yangtze River.
b) The Russian Airforce attacked Kiev and Roslavl, while the Luftwaffe attacked Kursk.

From O.K.M.:
a) USAAF 99th Fighter Squadron made its combat debut with its P-40L fighters, strafing Italian positions on Pantelleria island southwest of Sicily, Italy.

From B.d.U.:
a) U 195 (IXD1; KrvKpt. Heinz Buchholz) situation report: nothing sighted in KZ 7558 - 24 - 16 - 15 - 19. Horizontal Radar location in KZ 1630, presumably aircraft. Return passage.
b) U 178 (IXD2; KrvKpt. Wilhelm Dommes) attacked the convoy, which she had already reported, on 1 June in KP 8779 and scored 2 hits. Boiler explosion probable. Effect not observed owing to heavy seas, as accurate depth keeping impossible.
c) U 667 (Kptlt. Heinrich-Andreas Schroeteler) beat off an attack by a Lockheed Hudson on 26.5. in AF 4915 and scored several hits on a Catalina on 29.5. in AE 6714 during an 80 minute action. No damage. No radar observed in either attack. 2 small sailing vessels observed on patrol in the Iceland Passage and 2 destroyers with deterrent D/c's.

2322 - Sundown. Weather and Sea unchanged in 55.5h.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Thursday, 3 June 1943 - Southwest of Ascension

1100 - Qu.8173FL - Early Morning Dawn.

1123 - Crash dive for training. T=10 after 40 Sec. (3rd Watch with Diving Officer).

1126 - A-Meter.

1127 - Setting for T=20 at 96rpm.

1136 - Leveled-off at Reception Depth (9min. for 60m). Battery 74.3%; Compressed Air Supply 280Atü.

1140 - Surfaced after 17min. and 1.1nm.

1143 - Compressed Air Supply filled. 2x225RPM/8kn.

1155 - Sunrise. Weather and Sea unchanged in 67.5h.

1200 - Qu.8176FL - Days Run: 177.1nm - ↗ 169.6nm (21h 33') - ↘ 7.5nm (2h 27')
Total: 5377.4 (29tg 22h) - ↗ 5142.2nm (26tg 9h 01') - ↘ 235.2nm (3tg 12h 59')
439.5cbm (1.5cbm in 24h); Battery 74.3%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSE6/5, clear, very good visibility, >1000mb.

1916 - Incoming Radio Reports:

O.K.W.-Report:
a) All Japanese resistance on Attu, Aleutian Islands ceased.
b) Operation Cottbus: German forces attacked partisans in Barysaw (Borisov), Byelorussia.
c) French Resistance saboteurs destroyed 300 tons of tires in the Michelin factory at Clermont-Ferrant.
d) The first fruits of victory reached British shops in the form of Algerian wine.

From B.d.U.:
a) It is intended that U 575 and U 731 shall proceed in company through Biscay. The following basic order has been issued. As far as possible 2-4 boats are to make the return passage through Biscay in company.
Commanding Officers will agree at the rendezvous on details of procedure for the return passage.
The basis is to be:
1) Proceed in accordance with B.d.U. Standing Order No. 13.
2) Remain surfaced as long as possible in good weather in order to cover ground.
3) In case of a surprise attack, remain on the surface. Fire from all guns.
4) Keep together at all costs.
b) U 178 (IXD2; KrvKpt. Wilhelm Dommes) reported: As convoys proceed close inshore, it is possible to haul ahead without maintaining close contact, if the boat remains at least 60 miles off the coast. Boat will not then be subject to interference by a/c, even though Radar locations constantly intercepted. The enemy is using a large number of a/c, which patrol the area ahead and to seaward of the convoy. At times 3 a/c were sighted at one time by day as far as 50 miles off the coast. Boat succeeded in getting away on the surface.
c) U 119 (XB; Kptlt. Horst-Tessen von Kameke) has carried out the minelaying operation off Halifax as ordered.
d) U 304 (Oblt. Heinz Koch) last made a short weather report on 24.5. from BD 23. On the same day she was ordered to an attack area in AK 4675, depth 70 miles. Since 1.6. the boat has several times been ordered to give her position and no answer has been received. As there are no clues, she must be presumed lost.

B-Dienst Report:
a) Radio intercept from the RAF: The months of April and May have resultated in the destruction of the German Uboat Arm, with 43 Uboats sunk during the month of May alone. This became possible with the arrival of the Escort Carriers as of the month of March.

2316 - Sundown. Weather and Sea unchanged in 3 days and 7.5h.

RST
KorvKpt.& Cmdr. U 115
__________________
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Old 06-04-23, 07:22 AM   #450
Kapitän
The Old Man
 
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Default U 115 - First War Patrol (2nd leg) - Heading toward Supply Ship

Quote:
Originally Posted by Kapitän View Post
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Thursday, 3 June 1943 - Southwest of Ascension

1100 - Qu.8173FL - Early Morning Dawn.

1123 - Crash dive for training. T=10 after 40 Sec. (3rd Watch with Diving Officer).

1126 - A-Meter.

1127 - Setting for T=20 at 96rpm.

1136 - Leveled-off at Reception Depth (9min. for 60m). Battery 74.3%; Compressed Air Supply 280Atü.

1140 - Surfaced after 17min. and 1.1nm.

1143 - Compressed Air Supply filled. 2x225RPM/8kn.

1155 - Sunrise. Weather and Sea unchanged in 67.5h.

1200 - Qu.8176FL - Days Run: 177.1nm - ↗ 169.6nm (21h 33') - ↘ 7.5nm (2h 27')
Total: 5377.4 (29tg 22h) - ↗ 5142.2nm (26tg 9h 01') - ↘ 235.2nm (3tg 12h 59')
439.5cbm (1.5cbm in 24h); Battery 74.3%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSE6/5, clear, very good visibility, >1000mb.

1916 - Incoming Radio Reports:

O.K.W.-Report:
a) All Japanese resistance on Attu, Aleutian Islands ceased.
b) Operation Cottbus: German forces attacked partisans in Barysaw (Borisov), Byelorussia.
c) French Resistance saboteurs destroyed 300 tons of tires in the Michelin factory at Clermont-Ferrant.
d) The first fruits of victory reached British shops in the form of Algerian wine.

From B.d.U.:
a) It is intended that U 575 and U 731 shall proceed in company through Biscay. The following basic order has been issued. As far as possible 2-4 boats are to make the return passage through Biscay in company.
Commanding Officers will agree at the rendezvous on details of procedure for the return passage.
The basis is to be:
1) Proceed in accordance with B.d.U. Standing Order No. 13.
2) Remain surfaced as long as possible in good weather in order to cover ground.
3) In case of a surprise attack, remain on the surface. Fire from all guns.
4) Keep together at all costs.
b) U 178 (IXD2; KrvKpt. Wilhelm Dommes) reported: As convoys proceed close inshore, it is possible to haul ahead without maintaining close contact, if the boat remains at least 60 miles off the coast. Boat will not then be subject to interference by a/c, even though Radar locations constantly intercepted. The enemy is using a large number of a/c, which patrol the area ahead and to seaward of the convoy. At times 3 a/c were sighted at one time by day as far as 50 miles off the coast. Boat succeeded in getting away on the surface.
c) U 119 (XB; Kptlt. Horst-Tessen von Kameke) has carried out the minelaying operation off Halifax as ordered.
d) U 304 (Oblt. Heinz Koch) last made a short weather report on 24.5. from BD 23. On the same day she was ordered to an attack area in AK 4675, depth 70 miles. Since 1.6. the boat has several times been ordered to give her position and no answer has been received. As there are no clues, she must be presumed lost.

B-Dienst Report:
a) Radio intercept from the RAF: The months of April and May have resultated in the destruction of the German Uboat Arm, with 43 Uboats sunk during the month of May alone. This became possible with the arrival of the Escort Carriers as of the month of March.

2316 - Sundown. Weather and Sea unchanged in 3 days and 7.5h.

RST
KorvKpt.& Cmdr. U 115
Started new career in August 2019 to commemorate the beginning of WWII, 80 years before ...

+++++++

U 115
- KTB -
First War Patrol
(17th war patrol overall)

Friday, 4 June 1943 - South-Atlantic

1105 - Qu.2198FS - Early Morning Dawn.

1133 - Crash dive for training. T=10 after 38 Sec. (3rd Watch with Diving Officer).

1137 - A-Meter.

1138 - Setting for T=20 at 96rpm.

1147 - Leveled-off at Reception Depth (9min. for 60m). Battery 74.3%; Compressed Air Supply 280Atü.

1150 - Surfaced after 17min. and 1.0nm.

1153 - Compressed Air Supply filled. 2x225RPM/8kn.

1159 - Sunrise. Weather and Sea unchanged in 3 days and 19.5h.

1200 - Qu.2432FS - Days Run: 187.6nm - ↗ 186.6nm (23h 43') - ↘ 1.0nm (17')
Total: 5565.0 (30tg 22h) - ↗ 5328.8nm (27tg 8h 44') - ↘ 236.2nm (3tg 13h 16')
437.5cbm (2cbm in 24h); Battery 74.3%; Course 169°; 3xT-3, 2xEtoFat, 1xT-4; 9xBold; SSE6/5, clear, very good visibility, >1000mb.

2307 - Incoming Radio Reports:

From O.K.W.:
a) Chinese 79th Corps launched a frontal attack against Japanese troops in the Hubei-Hunan border region in China, on the southern side of the Yangtze River; Japanese positions were pushed back, but the Chinese suffered very heavy casualties.
b) The Luftwaffe attacked the large Russian Tank factory in Gorki.
c) The British House of Commons refused to lift the economic blockade against occupied Europe.

From B.d.U.:
a) U 180 (IXD1; Fregkpt. Werner Musenberg) sighted aircraft on her return passage in FM 73 course 230°, in FL 62 course 150° and in FL 37 course 110°. She believed that there was routine air reconnaissance from Ascension for traffic from S. America to Africa. No radar observed. The boat sank the Greek "Boris" 5,166 GRT on 3.6 in FL 3816. Ship was carrying wood, minerals and mixed goods from Santos to Freetown.
b) U 177 (IXD2; Kptlt. Robert Gysae) has requested a rendezvous with U 195 (IXD1; KrvKpt. Heinz Buchholz) to transship a stoker, who is suspected of having a disease of the lungs. Rendezvous was ordered for 1200/7/6 in GR 4885.
c) U 594 (Kptlt. Friedrich Mumm) and U 409 (Oblt. Hanns-Ferdinand Massmann) are to move away to the W., if they have not succeeded in breaking through the Straits of Gibraltar and a fresh attempt seems too difficult.
d) U 758 (Kptlt. Helmut Manseck) reports experience with conning tower casing; with sea 4, diving times, depth keeping and spray normal. No disturbance in quadruple mounting.
e) U 455 (Oblt. Hans-Martin Scheibe) successfully beat off an attack by a Mosquito in BF 37.
f) U 418 (Oblt. Gerhard Lange) and U 436 (Kptlt. Günther Seibicke) were on their way home and, according to careful reckoning, should have made their arrival reports several days ago. The boats last reported on 23.5. from AK 9438 and 21.5. from BD 59 respectively. There are no clues as to cause of loss, but it was probably due to the very strong air activity in Biscay.

B-Dienst Report:
a) A Luxembourg national working at Peenemünde, Germany, reported to the United Kingdom the presence of a 10-meter-long rocket with 150- to 250-kilometer range which was fueled by "bottles containing gas".

2314 - Sundown. Weather and Sea unchanged in 4 days and 7.5h.

RST
KorvKpt.& Cmdr. U 115
__________________
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