List of all U-boats




Ordered25 Aug 1941
Laid down18 Nov 1942 Howaldtswerke AG, Kiel (werk 32)
Launched8 Jan 1944
Commissioned18 Mar 1944Kptlt. Horst Creutz
18 Mar 1944 - 15 Dec 1944  Kptlt. Horst Creutz
1 patrol
18 Mar 1944-31 Oct 1944  5. Flottille (training)
1 Nov 1944-15 Dec 1944  11. Flottille (active service)
SuccessesNo ships sunk or damaged

Sunk during mid-December 1944 on the British minefield 'HW A3' in position 50°33,16’n / 05°11.37’w off the Cornish coast. 50 dead (all hands lost). (Dr. Axel Niestlé, 2010).

Loss position

View the 1 war patrol

July 4, 2007
Published the article The loss of U 325, U 400 and U 1021 by Dr. Axel Niestlé. This article explains the loss of this boat.

Previously recorded fate

  • Sunk during mid-December 1944 on the British minefield »HY A1« in position 50°39,9’n / 05°05’w off the Cornish coast. (Dr. Axel Niestlé, May 2007)
  • Sunk 17 Dec, 1944 in the North Atlantic south of Cork, in position 51.16N, 08.05W, by depth charges from the British frigate HMS Nyasaland. (Dr. Axel Niestlé, 1998)

Schnorchel-fitted U-boat
This boat was fitted with a Schnorchel underwater-breathing apparatus in October 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-400 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.

Stork on Shield

Media links

U-Boat Operations of the Second World War - Vol 1

Wynn, Kenneth

Hitler's U-boat War, Vol II

Blair, Clay

German U-Boat Losses During World War II

Niestle, Axel