List of all U-boats




Ordered5 Jun 1941
Laid down16 Nov 1942 AG Weser, Bremen (werk 1063)
Launched25 May 1943
Commissioned16 Sep 1943Kptlt. Rudolf Premauer
16 Sep 1943 - 30 Apr 1945  Kptlt. Rudolf Premauer
3 patrols
16 Sep 1943-31 May 1944  4. Flottille (training)
1 Jun 1944-30 Sep 1944  10. Flottille (active service)
1 Oct 1944-30 Apr 1945  33. Flottille (active service)
Successes2 ships sunk, total tonnage 15,259 GRT
1 ship damaged, total tonnage 6,825 GRT

Missing since April 1945 in the North Atlantic off the US East Coast.

No explanation exists for its loss. 59 dead (all hands lost). (FDS/NHB, April 1994).

Loss position

See the 3 ships hit by U-857 - View the 3 war patrols

There is a chance that this boat was sunk by the escort vessels currently being credited for U-879 as both boats might have been in the area at the same time.

Another chance is that she was sunk by an American Blimp (airship) that made a claim of dropping a homing torpedo on a submarine on 18 April, 1945.

Previously recorded fate

  • Sunk 7 April, 1945 in the North Atlantic east of Boston, USA, in position 42.22N, 69.46W, by depth charges from the US destroyer escort USS Gustafson. (Postwar assessment)
    Notes. This attack was actually against a nonsub target.

Schnorchel-fitted U-boat
This boat was fitted with a Schnorchel underwater-breathing apparatus in September 1944. Read more about the Schnorchel and see list of fitted boats.

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-857 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.

Sword and Oak Leaves

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