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This photo from 1943 shows the mass production of U-boot on a german shipyard. For minimizing the damage caused by aerial attacks, the parts of these submarines were produced in separated and distant places, to be later transported to the shipyards where the submarines could be then quickly assembled and equipped.

This photo from 1943 shows the mass production of U-boot on a german shipyard. For minimizing the damage caused by aerial attacks, the parts of these submarines were produced in separated and distant places, to be later transported to the shipyards where the submarines could be then quickly assembled and equipped.

The U-331 was a Type VIIC U-boat of German Kriegsmarine during World War II. She 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 Freiherr Hans-Diedrich von Tiesenhausen.

The was a Type VIIC U-boat of German Kriegsmarine during World War II. She 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 Fr