German submarine U-639

German submarine U-639 was a Type VIIC U-Boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 31 October 1941 at Blohm & Voss in Hamburg as yard number 615, launched on 22 July 1942 and went into service on 10 September 1942. U-639 spent her entire career operating out of Norway. Over the course of four patrols she neither sank nor damaged any ships, and was sunk by the SOVIET SUBMARINE S-101 in the Kara Sea while on a minelaying mission.

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