|Ordered||23 Sep 1939|
|Laid down||4 Jan 1940||F Schichau GmbH, Danzig (werk 1472)|
|Launched||2 Feb 1941|
|Commissioned||5 Apr 1941||Kptlt. Wilhelm Dommes (Knights Cross)|
|Successes||6 ships sunk, total tonnage 7,679 GRT|
1 auxiliary warship sunk, total tonnage 313 GRT
2 warships sunk, total tonnage 3,548 tons
1 ship damaged, total tonnage 3,560 GRT
1 warship damaged, total tonnage 450 tons
1 ship a total loss, total tonnage 6,415 GRT
Sunk on 21 Oct, 1943 in the Mediterranean out of Algiers in position 37.23N, 00.35E, by depth charges from a British Wellington aircraft (Sqdn. 179/Z). 52 dead (all hands lost). (FDS/NHB, November 1987).
Previously recorded fate
U-431 operated with the following Wolfpacks during its career:
Brandenburg (15 Sep 1941 - 1 Oct 1941)
Attacks on this boat and other events
3 Nov 1942
After being severely damaged in an aircraft attack off the coast of Algiers U-431 was forced to return to base.
1 recorded attack on this boat.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-431 did not suffer any casualties (we know of) until the time of her loss.