|Ordered||21 Nov 1940|
|Laid down||1 Apr 1941||Nordseewerke, Emden (werk 209)|
|Launched||26 Mar 1942|
|Commissioned||6 May 1942||Oblt. Kurt Ruwiedel|
|Successes||No ships sunk or damaged|
Listed as missing in the North Atlantic on 3 Jan, 1943.
There is no explanation for its loss. 47 dead (all hands lost). (Axel Niestlé, January 1993).
U-337 reported for the last time on 3 Jan, 1943 from position 63N, 12W.
Previously recorded fate
- Sunk 15 Jan, 1943 southwest of Iceland, in position 57.40N, 27.10W, by depth charges from a British Fortress aircraft (Sqdn. 206/G). (Postwar assessment)
Notes. This attack was actually against U-632 inflicting no damage.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-337 did not suffer any casualties (we know of) until the time of her loss.