14 January 1944) Preussen (7 – 22 March 1944) Summary of raiding history References Notes Citations Bibliography External links 1943 ships Ships built by Schichau Ships built in Danzig German Type VIIC submarines U-boats commissioned in 1943 U-boats sunk by British warships U-boats sunk in 1944 World War II shipwrecks in the English Channel World War II submarines of Germany Maritime incidents in August 1944