| Date | U-boat | Commander | Name of ship | Tons | Nat. | Convoy |
| |
| 16 Jan, 1942 | U-402 | Baron Siegfried von Forstner | | Llangibby Castle (d.) | 11.951 |  | br | WS-15 |
| 13 Apr, 1942 | U-402 | Baron Siegfried von Forstner | | Empire Progress | 5.249 |  | br | ON-80 |
| 30 Apr, 1942 | U-402 | Baron Siegfried von Forstner | | Ashkhabad | 5.284 |  | sj | |
| 2 May, 1942 | U-402 | Baron Siegfried von Forstner | | USS Cythera (PY 26) | 602 |  | am | |
| 2 Nov, 1942 | U-402 | Baron Siegfried von Forstner | | Dalcroy | 4.558 |  | br | SC-107 |
| 2 Nov, 1942 | U-402 | Baron Siegfried von Forstner | | Empire Antelope | 4.945 |  | br | SC-107 |
| 2 Nov, 1942 | U-402 | Baron Siegfried von Forstner | | Empire Leopard | 5.676 |  | br | SC-107 |
| 2 Nov, 1942 | U-402 | Baron Siegfried von Forstner | | Empire Sunrise (d.) | 7.459 |  | br | SC-107 |
| 2 Nov, 1942 | U-402 | Baron Siegfried von Forstner | | Rinos | 4.649 |  | gr | SC-107 |
| |
| 7 Feb, 1943 | U-402 | Baron Siegfried von Forstner | | Afrika | 8.597 |  | br | SC-118 |
| 7 Feb, 1943 | U-402 | Baron Siegfried von Forstner | | Daghild (d.) | 9.272 |  | nw | SC-118 |
| 7 Feb, 1943 | U-402 | Baron Siegfried von Forstner | | Henry R. Mallory | 6.063 |  | am | SC-118 |
| 7 Feb, 1943 | U-402 | Baron Siegfried von Forstner | | Kalliopi | 4.965 |  | gr | SC-118 |
| 7 Feb, 1943 | U-402 | Baron Siegfried von Forstner | | Robert E. Hopkins | 6.625 |  | am | SC-118 |
| 7 Feb, 1943 | U-402 | Baron Siegfried von Forstner | | Toward | 1.571 |  | br | SC-118 |
| 8 Feb, 1943 | U-402 | Baron Siegfried von Forstner | | Newton Ash | 4.625 |  | br | SC-118 |
| 11 May, 1943 | U-402 | Baron Siegfried von Forstner | | Antigone | 4.545 |  | br | SC-129 |
| 11 May, 1943 | U-402 | Baron Siegfried von Forstner | | Grado | 3.082 |  | nw | SC-129 |
| | 99.718 | |
| 15 ships sunk (71.036 tons) and 3 ships damaged (28.682 tons).
Legend
(d.) means the ship was damaged.
We have a picture of this vessel.
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