RMS Lusitania Sinking of the RMS Lusitania. RMS Lusitania RMS "Lusitania" was a British ocean liner and briefly the world's largest passenger ship. The ship was sunk on 7 May 1915 by a German U-boat off the southern coast of Ireland. The sinking presaged the United States declaration of war on Germany in 1917. The ship was a holder of the Blue Riband appellation for the fastest Atlantic crossing and was briefly the world's largest passenger ship until the completion of her sister ship . The Cunard Line launched "Lusitania" in 1906, at a time of fierce competition for the North Atlantic
German submarine U-657 sank one merchant ship, for a total of . "U-657" took part in six wolfpacks, namely "U-657" was sunk on 17 May 1943 in the North Atlantic, E of Cape Farewell, Greenland, in position , by depth charges from Royal Navy frigate . All hands were lost. German submarine U-657 German submarine "U-657" was a Type VIIC U-boat built for Nazi Germany's "Kriegsmarine" for service during World War II. She was laid down on 5 October 1940 by Howaldtswerke, Hamburg as yard number 806, launched on 12 August 1941 and commissioned on 8 October 1941 under "Oberleutnant zur See" Hans-Jürgen