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-43 (1939) a total loss. German submarine U-43 (1939) German submarine "U-43" was a Type IXA U-boat of Nazi Germany's "Kriegsmarine" during World War II. The keel for "U-43" was laid down in August 1938 at Bremen; she was launched in May 1939 and commissioned in August. Between November 1939 and July 1943, the U-boat conducted 14 combat patrols, sinking 21 merchant ships for a total of , damaging one ship of and another of - enough for it to be declared a total loss. "U-43" was sunk on 30 July 1943 southwest of the Azores by a torpedo dropped by a