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-626 the last U-boat of 1942 to be sunk by an American agency, and it was not known until after the war that "Ingham" had sunk "U-626". German submarine U-626 The German submarine "U-626" was a Type VIIC U-boat of Nazi Germany's "Kriegsmarine" during World War II. The ship was built by Blohm & Voss of Hamburg, and commissioned in May 1942. After six months of basic training she was assigned to the 6th U-boat Flotilla. "U-262" sailed from Bergen in December 1942 on her first operational voyage. She was sunk seven days later by a single depth charge from USCGC