Operated by
RMS Lusitania → Cunard Line: Operated by. RMS Lusitania was a British ocean liner launched by the Cunard Line in 1906 as a Royal Mail Ship. She was the world's largest passenger ship until the completion of her sister Mauretania three months later. The Cunard Line is a British shipping company and an international cruise line based at Carnival House at Southampton, England, operated by Carnival UK and owned by Carnival Corporation. Since 2011, Cunard and its four ships have been registered in Hamilton, Bermuda.