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 trade. She sank on her
German submarine U-309 German submarine U-309 German submarine "U-309" was a Type VIIC U-boat of Nazi Germany's "Kriegsmarine" during World War II. The submarine was laid down on 24 January 1942 at the Flender Werke yard at Lübeck, launched on 5 December 1942, and commissioned on 27 January 1943 under the command of "Oberleutnant zur See" Hans-Gert Mahrholz. She sailed on nine combat patrols, but damaged only one ship, before being sunk off Scotland on 16 February 1945. German Type VIIC submarines were preceded by the shorter Type VIIB submarines. "U-309" had a displacement of when at the surface and while submerged. She