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| U-137 | Type IID |
| Feldpost Number | M 02 030 |
| Construction Yard | Deutsche Werke AG, Kiel-Gaarden |
| Yard Number | 266 |
| Ordered | 25th Sep 1939 |
| Keel laid | 16th Nov 1939 |
| Launched | 18th May 1940 |
| Commissioned | 15th Jun 1940 |
| Baubelehrung | Baubelehrung U-Boote Ostsee, Kiel | | Training, Flotillas and Duties | | 06.40 - 12.40 | 1.U-Flottille, Kiel
Ausbildungsboot (under training)
Frontboot (operational)
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| 01.41 - 06.41 | 22.U-Flottille, Gotenhafen
Schulboot (training boat)
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| 06.41 - 07.41 | 3.U-Flottille, La Pallice
Frontboot (operational)
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| 08.41 - 05.45 | 22.U-Flottille, Gotenhafen
Schulboot (training boat)
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| Commanders | | 06.40 - 12.40 | OL Herbert Wohlfarth
see also: U-14 U-556 |
| 12.40 - 12.41 | OL Hanns-Ferdinand Massmann
see also: U-409 |
| 12.41 - 09.42 | OL Herbert Brünning
see also: U-642 U-3518 |
| 09.42 - 12.43 | OL Gerth Gemeiner
see also: U-146 U-154 |
| 12.43 - 01.45 | OL Günther Schimmel
see also: U-30 U-382 |
| 01.45 - 02.45 | OL Erich Fischer |
| 03.45 - 05.45 | OL Hans-Joachim Dierks
see also: U-14 |
| Operations information for U-137 | 14.09.1940 - 17.09.1940
First Sailing
U-137 left Kiel under the command of Herbert Wohlfarth on 14th Sep 1940 and arrived at return on 17th Sep 1940 after three days.
| 21.09.1940 - 29.09.1940
Second Sailing - active patrol
On the 21st Sep 1940, U-137 left Stavanger under the command of Herbert Wohlfarth and after just over one week arrived at return on 29th Sep 1940.
Herbert Wohlfarth hit three ships on this patrol and all of them were in convoy, all of them from convoy OB-218.-
On 26th Sep 1940 he sank the British 4,753 ton Stratford, sailing with convoy OB-218.
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On 26th Sep 1940 he damaged the British 4,917 ton Ashantian, a member of convoy OB-218.
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On 26th Sep 1940 he sank the British 6,042 ton Manchester Brigade, part of convoy OB-218.
| 09.10.1940 - 17.10.1940
Third Sailing - active patrol
U-137 departed under Herbert Wohlfarth from Lorient on 9th Oct 1940 and arrived at return on 17th Oct 1940 after just over one week.
Herbert Wohlfarth hit one ship on this patrol.-
On 14th Oct 1940 he damaged the British 10,552 ton HMS Cheshire.
| 03.11.1940 - 22.11.1940
Fourth Sailing - active patrol
U-137 left Lorient under the command of Herbert Wohlfarth on 3rd Nov 1940 and after more than two weeks arrived at return on 22nd Nov 1940.
Herbert Wohlfarth hit four ships on this patrol and all of them were in convoy: three were from convoy HG and one was from convoy OB-240.
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On 13th Nov 1940 he sank the British 5,094 ton Cape St Andrew, from convoy OB-240.
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On 16th Nov 1940 he sank the British 5,887 ton Planter, sailing with convoy HG.
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On 17th Nov 1940 he sank the British 1,044 ton Saint Germain, a member of convoy HG.
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On 17th Nov 1940 he sank the Swedish 1,316 ton Veronica, part of convoy HG.
| 24.11.1940 - 27.11.1940
Fifth Sailing
On the 24th Nov 1940, U-137 left Bergen under the command of Herbert Wohlfarth and arrived at return on 27th Nov 1940 after three days.
| 17.06.1941 - 20.06.1941
Sixth Sailing
U-137 departed under Hanns-Ferdinand Massmann from Kiel on 17th Jun 1941 and after three days arrived at return on 20th Jun 1941.
| 21.06.1941 - 04.07.1941
Seventh Sailing - active patrol
U-137 left Bergen under the command of Hanns-Ferdinand Massmann on 21st Jun 1941 and arrived at return on 4th Jul 1941 after nearly two weeks.
| 24.07.1941 - 26.07.1941
Eighth Sailing
On the 24th Jul 1941, U-137 left Bergen under the command of Hanns-Ferdinand Massmann and after two days arrived at return on 26th Jul 1941.
| 28.08.1941 - 29.08.1941
Ninth Sailing
U-137 departed under Hanns-Ferdinand Massmann from Helsingör on 28th Aug 1941 and arrived at return on 29th Aug 1941 after one day.
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