List of all U-boats




Ordered9 Oct 1939
Laid down12 Mar 1941 Howaldtswerke Hamburg AG, Hamburg (werk 810)
Launched11 Dec 1941
Commissioned12 Feb 1942Oblt. Erich von Lilienfeld
12 Feb 1942 - 15 Oct 1942  Oblt. Erich Lilienfeld
1 patrol
12 Feb 1942-30 Sep 1942  5. Flottille (training)
1 Oct 1942-15 Oct 1942  3. Flottille (active service)
Successes1 ship sunk, total tonnage 3,672 GRT

Sank 15 Oct 1942 in the North Atlantic, in position 53.42N, 35.56W, after being rammed by the British destroyer HMS Viscount. 44 dead (all hands lost). (FDS/NHB, June 1987).

Loss position

See the 1 ships hit by U-661 - View the 1 war patrol

Previously recorded fate

  • The attack by a British Liberator aircraft (RAF 120/H) on 15 Oct, 1942 in position 53.58N, 33.43W. (Postwar assessment)
    Notes. This attack was instead against the U-615, causing no damage.

Wolfpack operations

U-661 operated with the following Wolfpacks during its career:
   Pfeil (12 Sep 1942 - 22 Sep 1942)
   Blitz (22 Sep 1942 - 26 Sep 1942)
   Wotan (12 Oct 1942 - 15 Oct 1942)

General notes on this boat

There was going to be another loss around convoy SC-104 as U-353 was sunk the next day.

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-661 did not suffer any casualties (we know of) until the time of her loss.

Media links

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

Wynn, Kenneth

German U-Boat Losses During World War II

Niestle, Axel

Hitler's U-boat War

Blair, Clay