German submarine U-637

German submarine U-637 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 17 October 1941 by Blohm & Voss, Hamburg as yard number 613, launched on 7 July 1942 and commissioned on 27 August 1942 under Kptlt. Max Bernd Dieterich.

Service History
The boat's career began with training at 5th U-boat Flotilla on 27 August 1942, followed by active service on 1 June 1944 as part of the 1st Flotilla for the remainder of her service.

In three patrols she sank one warship, for a total of 56 tons.

Fate
U-637 surrendered on 9 May 1945 at Stavanger and later sunk as part of Operation Deadlight on 21 December 1945 at position 55.58333°N, -7.76667°W.