List of all U-boats




Ordered5 Jun 1941
Laid down3 Sep 1942 Howaldtswerke Hamburg AG, Hamburg (werk 827)
Launched18 Sep 1943
Commissioned25 Oct 1943Oblt. Guido Hyronimus
25 Oct 1943 - 7 Jul 1944  Oblt. Guido Hyronimus
1 patrol
25 Oct 1943-31 May 1944  5. Flottille (training)
1 Jun 1944-7 Jul 1944  7. Flottille (active service)
SuccessesNo ships sunk or damaged

Sunk on 6 July 1944 in the English Channel south-west of Brighton, in position 50.32N, 00.23W, by depth charges from the Canadian destroyers HMCS Ottawa and HMCS Kootenay and the British corvette HMS Statice. 52 dead (all hands lost).

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-678 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.

Man riding U-boat

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