 German submarine U-331

German submarine "U-331" was a Type VIIC U-boat of Nazi Germany's "Kriegsmarine" during World War II.The submarine was laid down on 26 January 1940 at the Nordseewerke yard at Emden, launched on 20 December 1940, and commissioned on 31 March 1941 under the command of "Oberleutnant zur See " Hans-Diedrich Freiherr von Tiesenhausen.