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-272 German submarine U-272 German submarine "U-272" was a type VIIC U-boat of Nazi Germany's "Kriegsmarine" in World War II. She was laid down on 28 November 1941, launched on 15 August 1942 and commissioned on 7 October that year under the command of "Kapitänleutnant" Heinz Hepp. She served in the 8th U-boat flotilla, a training unit and never reached operational status. She was sunk after colliding with on 12 November 1942. 29 of her crew died and there were 19 survivors. German Type VIIC submarines were preceded by the shorter Type VIIB submarines. "U-272" had a displacement of when at