List of all U-boats




Ordered20 Jan 1941
Laid down23 Dec 1941 Blohm & Voss, Hamburg (werk 622)
Launched3 Sep 1942
Commissioned29 Oct 1942Ltnt. Heinrich Wulff
29 Oct 1942 - 17 May 1943  Oblt. Heinrich Wulff
2 patrols
29 Oct 1942-31 Mar 1943  5. Flottille (training)
1 Apr 1943-17 May 1943  11. Flottille (active service)
SuccessesNo ships sunk or damaged

Sunk on 17 May 1943 in the North Atlantic south-east of Iceland, in position 62.10N, 14.30W, by depth charges from a British Hudson aircraft (269 Sqn RAF/J). 46 dead (all hands lost).

Loss position

View the 2 war patrols

Wolfpack operations

U-646 operated with the following Wolfpacks during its career:
   Taifun (2 Apr 1943 - 4 Apr 1943)

Men lost from U-boats

Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-646 did not suffer any casualties (we know of) until the time of her loss.

U-boat Emblems

We have 2 emblem entries for this boat. See the emblem page for this boat or view emblems individually below.

Compass Rose


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