List of all U-boats




Ordered25 Aug 1941
Laid down16 Nov 1942 H C Stülcken Sohn, Hamburg (werk 787)
Launched23 Jul 1943
Commissioned8 Nov 1943Oblt. Otto Wollschl├Ąger
8 Nov 1943 - 17 Dec 1944  Oblt. Otto Wollschl├Ąger
18 Dec 1944 - 5 May 1945  Oblt. Ludwig Fabricius
No patrols
28 Sep 1943-28 Feb 1945  22. Flottille (school boat)
1 Mar 1945-5 May 1945  31. Flottille (training)
SuccessesNo ships sunk or damaged

Scuttled on 5 May 1945 in the Gelting Bay. Wreck broken up.

Final location

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-721 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

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

Wynn, Kenneth

German U-Boat Losses During World War II

Niestle, Axel

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