List of all U-boats




Ordered20 Jan 1941
Laid down3 Jul 1943 Kriegsmarinewerft (KMW), Wilhelmshaven (werk 161)
Launched6 May 1944
Commissioned7 Jul 1944Oblt. Ralf Jürs
7 Jul 1944 - 9 May 1945  Kptlt. Ralf Jürs
1 patrol
7 Jul 1944-28 Feb 1945  31. Flottille (training)
1 Mar 1945-8 May 1945  11. Flottille (active service)
SuccessesNo ships sunk or damaged

Surrendered on 9 May 1945 at Bergen, Norway (Waller & Niestlé, 2010).

Transferred to Loch Ryan, Scotland on 2 June 1945.

Operation Deadlight (post-war Allied operation, info)
While in tow for the scuttling ground on 4 December, 1945 she foundered and sank roughly 11 miles NE of the Inistrahull Light, in position 55.32N, 07.70W.

Final location

Blue marker shows final fate during Operation Deadlight. Orange marker shows German surrender.

View the 1 war patrol

Schnorchel-fitted U-boat
This boat was fitted with a Schnorchel underwater-breathing apparatus in January 1945. Read more about the Schnorchel and see list of fitted boats.

Annoucements related to this boat

A diver died while filming the U-778 (13 Oct 2007)
U-778 to be raised? (20 Aug 2007)

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-778 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.


Media links

The Grey Wolves of Eriboll

David M. Hird

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

The Royal Navy and German Naval Disarmament, 1942-1947

Madsen, Chris