|Ordered||2 Apr 1942|
|Laid down||9 Apr 1943||Danziger Werft AG, Danzig (werk 141)|
|Launched||2 Oct 1943|
|Commissioned||9 Feb 1944||Oblt. Heinz Goldbeck|
|Successes||No ships sunk or damaged|
Sunk 29 March, 1945 in the English Channel south of Lizard Point, in position 49.58N, 05.25W, by depth charges from the British frigate HMS Duckworth. 49 dead (all hands lost). (Axel Niestlé, January 1991).
Previously recorded fate
- Sunk by a mine explosion observed from the A/S trawler HMT Willow on 5 April in position 52.03N, 05.53W. (Postwar assessment)
Notes. This was actually U-242's last dying gasp.
This boat was fitted with a Schnorchel underwater-breathing apparatus and sailed equipped with it in February 1945 but it was of course installed prior to that date. Read more about the Schnorchel and see list of fitted boats.
Men lost from the boat
23 Apr 1944
During the Baltic exercises the boat lost one man off Pillau. [Matrosengefreiter Alfred Friedl]
11 Oct 1944
Two men were killed and one wounded when a torpedo exploded on board.
Related: For more info on such losses see - Men lost from U-boats -