German submarine U-103 (1940)
 German submarine U-103 was a Type IXB U-boat of Nazi Germany's Kriegsmarine that operated during World War II. She was one of the most successful boats in the entire war sinking over 237000 tons of Allied shipping in 11 patrols in a career lasting more than four years.U-103 was laid down on 6 September 1939 at AG Weser in Bremen as 'werk' 966. She was launched on 12 April 1940 and commissioned on 5 July under the command of Korvettenkapitän Victor Schütze.