German submarine U-307

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German submarine U-307 was a Type VIIC U-boat of the Nazi German Kriegsmarine during World War II. The U-boat was laid down on 5 November 1941, and commissioned on 18 November 1942.

Service history
Despite carrying out 13 war patrols between July 1943 and April 1945, U-307 sank only two vessels; the 7,176-ton American Liberty ship SS William S. Thayer on 30 April 1944, fifty miles south of Bear Island, and the 50-ton Norwegian Army motor boat Lennox in Van Mijenfjorden, Spitsbergen, on 18 August 1944.

In September 1944, together with the supply ship Karl J. Busch, U-307 transported the men of Operation Haudegen, a German military meteorological mission, to Svalbard.

Fate
U-307 was sunk on 29 April 1945 in the Barents Sea near Murmansk, Russia, in position 69.24°N, 33.44°W by depth charges from the British Loch class frigate HMS Loch Insh (K433). There were 37 dead and 14 survivors.