List of all U-boats




Ordered6 Nov 1943
Laid down30 Jun 1944 F Schichau GmbH, Danzig (werk 1649)
Launched15 Aug 1944
Commissioned23 Sep 1944Kptlt. Karl-Hartwig Siebold
23 Sep 1944 - 2 May 1945  Kptlt. Karl-Hartwig Siebold
No patrols
23 Sep 1944-15 Feb 1945  8. Flottille (training)
16 Feb 1945-2 May 1945  5. Flottille (training)
SuccessesNo ships sunk or damaged

Scuttled on 2 May 1945 at Wilhelmshaven. Wreck broken up.

Final location

Note. Fate map temporarily disabled due to huge Google Maps price increase (20 July 2018).

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-3504 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.

Elephant and Olympic rings

Media links

German U-Boat Losses During World War II

Niestle, Axel

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

Wynn, Kenneth