|Ordered||5 Jun 1941|
|Laid down||12 May 1942||F Schichau GmbH, Danzig (werk 1545)|
|Launched||4 Feb 1943|
|Commissioned||1 May 1943||Kptlt. Heinz Schwassmann|
|Successes||No ships sunk or damaged|
Sunk 18 July 1944 in the Arctic west of Narvik, Norway, in position 68.24N, 09.51E, by depth charges from a British Catalina aircraft (RAF Sqdn. 210/Z, pilot R. W. G. Vaughan). 52 dead (all hands lost).
U-742 operated with the following Wolfpacks during its career:
Grimm (31 May 1944 - 6 Jun 1944)
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-742 did not suffer any casualties (we know of) until the time of her loss.