The sinking was a major factor that brought the United States in to the war in 1917It was one of four that drove RMS Lusitania across ... fitted with three-bladed propellers.

RMS Titanic was one of three Olympic-class ocean liners built between 1908 and 1915 ... As the ship listed further and further to the right, one of Britannic’s giant, 20 feet high propellers began to ...