German Type IX B U-boat, specifically the U-123 “Blaison,” which is suspended in one of the cells of the Keroman II U-boat base in Lorient, France. The Type IXB was a class of German U-boats built for the Kriegsmarine between 1937 and 1941. The image provides a clear view of the twin stern torpedo tubes on a Type IX U-boat. U-123 was a Type IX B submarine that was launched in 1940 and served in World War II. The Keroman U-boat base was a fortified submarine base built by the Germans during the Battle of France.