Title: Kriegsmarine U-boats 1939-45 (1)
Subjects: Germany. Kriegsmarine, Onderzeee rs, World War, 1939-1945, History, Unterseeboot, Submarine, Submarines (Ships), List of ships, Tweede Wereldoorlog, Germany, Naval operations, Design and construction, German Naval operations, Onderzeeërs, Germany, history, naval, Submarines (ships), World war, 1939-1945, naval operations, german, World war, 1939-1945, naval operations, submarine