|Ordered||6 Nov 1943|
|Laid down||20 Sep 1944||F Schichau GmbH, Danzig (werk 1665)|
|Launched||23 Nov 1944|
|Commissioned||12 Jan 1945||Kptlt. Sarto Ballert|
|Successes||No ships sunk or damaged|
Sunk 31 Jan 1945 in the Baltic Sea north-east of Bülk, in position 54.28N, 10.12E, by mines. 85 dead (all hands lost).
Note. Fate map temporarily disabled due to huge Google Maps price increase (20 July 2018).
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-3520 did not suffer any casualties (we know of) until the time of her loss.