RMS Mauretania (1906) launched by the Duchess of Roxburghe. At the time of her launch, she was the largest moving structure ever built, and slightly larger in gross tonnage than "Lusitania". The main visual differences between "Mauretania" and "Lusitania" were that "Mauretania" was five feet longer and had different vents. "Mauretania" also had two extra stages of turbine blades in her forward turbines, making her slightly faster than "Lusitania". "Mauretania" and "Lusitania" were the only ships with direct-drive steam turbines to hold the Blue Riband; in later ships, reduction-geared turbines were mainly used. "Mauretania"s usage of the steam turbine was the largest application
German submarine U-1006 to return fire for a short time. "U-1006"s 44 remaining crewmen abandoned ship and she was sunk by two depth charges, six men had been killed in the attack. The wreck now lies at . German submarine U-1006 German submarine "U-1006" was a Type VIIC/41 U-boat of Nazi Germany's "Kriegsmarine" during World War II. She was ordered on 14 October 1941, and was laid down on 30 January 1943, at Blohm & Voss, Hamburg, as yard number 206. She was launched on 17 November 1943, and commissioned under the command of "Oberleutnant zur See" Horst Voigt on 11 January 1944.