|Ordered||23 Sep 1939|
|Laid down||8 Apr 1940||Danziger Werft AG, Danzig (werk 102)|
|Launched||16 Dec 1940|
|Commissioned||10 Apr 1941||Kptlt. Gero Zimmermann|
|Successes||No ships sunk or damaged|
Sunk on 3 August 1941 in the North Atlantic south-west of Ireland, in position 50.30N, 19.35W, by depth charges from the British corvette HMS Hydrangea. 45 dead (all hands lost). (Axel Niestlé, February 2004).
Previously recorded fate
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-401 did not suffer any casualties (we know of) until the time of her loss.