The SS Imperator, an ocean liner owned by the Hamburg America Line. When she was completed in 1913, she was the largest passenger ship in the world. After World War I, the ship was seized by the United States as part of the war reparations. Initially used for tranporting troops, she was soon handed over to the Cunard Line and renamed as RMS Berengaria in 1919.
Her namesake was Berengaria of Navarre, spouse of Richard I (aka Lionheart) of England.