U-521
Type | IXC | |||
| Ordered | 14 Feb, 1940 | |||
| Laid down | 3 Jul, 1941 | Deutsche Werft AG, Hamburg (werk 336) | ||
| Launched | 17 Mar, 1942 | |||
| Commissioned | 3 Jun, 1942 | Oblt. Klaus Bargsten (Knights Cross) | ||
| Commanders |
| |||
| Career | 3 patrols | 3 Jun, 1942 - 30 Sep, 1942 4. Flottille (training) 1 Oct, 1942 - 2 Jun, 1943 2. Flottille (front boat) | ||
| Successes | 3 ships sunk for a total of 19.551 GRT 1 auxiliary warship sunk for a total of 750 GRT | |||
| Fate | Sunk 2 June, 1943 in the North Atlantic south-east of Baltimore, in position 37.43N, 73.16W, by depth charges from the US patrol craft USS PC-565. 51 dead and 1 survivor | |||
See the 4 ships hit by U-521 - View the 3 war patrols
Wolfpack operations
U-521 operated with the following Wolfpacks during its career:
Kreuzotter (18 Oct, 1942 - 19 Oct, 1942)
Rochen (22 Jan, 1943 - 25 Feb, 1943)
Attacks on this boat
31 Oct, 1942
While attacking convoy SC 107 a Hudson aircraft (Sqdn 145) attacked the boat causing minor damages. (Sources: Blair, vol 2, page 45.)
1 recorded attacks on this boat.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-521 did not suffer any casualties (we know of) until the time of her loss.
![]() German U-Boat Losses During World War II Niestle, Axel Buy this title at amazon.co.uk See more sellers |
Books dealing with this subject include: |

