Patrol info for U-100
| Departure | Arrival / Fate | Duration | ||
| 9 Aug 1940 | Kiel | 1 Sep 1940 | Lorient | 24 days |
Commander | Officers * |
 Kptlt. Joachim Schepke |
Daily positions, sinkings and allied attacks during the patrol of U-100
We have 23 daily positions for the 24 days U-100 was at sea.
Departure from Kiel on 9 Aug 1940.
10 Aug 1940 - 11 Aug 1940 - 12 Aug 1940 - 13 Aug 1940 - 14 Aug 1940 - 15 Aug 1940 - 16 Aug 1940 - 17 Aug 1940 - 18 Aug 1940 - 19 Aug 1940 - 20 Aug 1940 - 21 Aug 1940 - 22 Aug 1940 - 23 Aug 1940 - 24 Aug 1940 - 25 Aug 1940 - 26 Aug 1940 - 27 Aug 1940 - 28 Aug 1940 - 29 Aug 1940 - 30 Aug 1940 - 31 Aug 1940 -
Arrival at Lorient on 1 Sep 1940.
Ships hit by U-100 during this patrol
| Date | U-boat | Commander | Name of ship | Tons | Nat. | Convoy | Map | ||
|---|---|---|---|---|---|---|---|---|---|
| 16 Aug 1940 | U-100 | Joachim Schepke |  | Empire Merchant | 4,864 |  | br | A | |
| 25 Aug 1940 | U-100 | Joachim Schepke | | Jamaica Pioneer | 5,471 | | br | B | |
| 29 Aug 1940 | U-100 | Joachim Schepke | | Dalblair | 4,608 | | br | OA-204 | C |
| 29 Aug 1940 | U-100 | Joachim Schepke | | Hartismere (d.) | 5,498 | | br | OA-204 | D |
| 29 Aug 1940 | U-100 | Joachim Schepke | | Astra II | 2,393 | | br | OA-204 | E |
| 29 Aug 1940 | U-100 | Joachim Schepke | | Alida Gorthon | 2,373 |  | sw | OA-204 | F |
| 29 Aug 1940 | U-100 | Joachim Schepke | Empire Moose | 6,103 | | br | OA-204 | G | |
| 31,310 | |||||||||
6 ships sunk (25,812 tons) and 1 ship damaged (5,498 tons). Legend | |||||||||
General Events during this patrol
1940
16 Aug 1940. After U-100 surfaced after sinking Empire Merchant, the boat suddenly dived again due to a handling error and Schepke, standing alone on the bridge, was forced to close the conning tower hatch to prevent the boat sinking. He clung to the periscope standard until the boat resurfaced. Schepke noted in the KTB (War Diary) entry that it must have been a funny sight for the survivors in the lifeboat to see a German U-boat commander in such an embarrassing situation. BdU (U-boat Command) was not amused.
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Attacks on U-100 during this patrol
17 Aug 1940
20.45 hrs, 200 miles NW of Ireland: a destroyer dropped 7-8 depth charges shortly after U-100 located a convoy. The hydrophones were disabled and the boat lost contact with the convoy. (Sources: Ritschel)
About this data
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See all patrols for U-100
* These are officers that later became commanders themselves.