List of all U-boats




Ordered5 Jun 1941
Laid down13 Jun 1942 Howaldtswerke Hamburg AG, Hamburg (werk 826)
Launched6 Jul 1943
Commissioned20 Sep 1943Oblt. Paul Weber
20 Sep 1943 - 16 Jul 1944  Oblt. Paul Weber
17 Jul 1944 - 5 Apr 1945  Oblt. Gerhard Ady
1 patrol
20 Sep 1943-31 May 1944  5. Flottille (training)
1 Jun 1944-1 Jul 1944  3. Flottille (active service)
1 Jul 1944-19 Feb 1945  23. Flottille (school boat)
20 Feb 1945-5 Apr 1945  31. Flottille (training)
SuccessesNo ships sunk or damaged

Destroyed on 9 April 1945 in box No. 5 of U-boat pen Fink II at Hamburg-Finkenwerder, in position 53.32,6N, 09.51,3E, by bombs during a British air raid (RAF Bomber Command). No casualties. Wreck broken up.

Loss position

View the 1 war patrol

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-677 did not suffer any casualties (we know of) until the time of her loss.

U-boat Emblems

We have 1 emblem entry for this boat. See the emblem page for this boat or view emblems individually below.

Elephant on World

Media links

U-Boat Operations of the Second World War - Vol 2

Wynn, Kenneth

Hitler's U-boat War, Vol II

Blair, Clay

German U-Boat Losses During World War II

Niestle, Axel