High Quality Content by WIKIPEDIA articles! The RMS Lancastria was a British Cunard liner sunk on 17 June 1940 during World War II with the loss of an estimated 4,000 plus lives. It is the worst single loss of life in British maritime history and the bloodiest single engagement for UK forces (in terms of lives lost) in the whole conflict, claiming more lives than the combined losses on Titanic and Lusitania. Launched on the Clyde, Scotland, in 1920 by William Beardmore and Company of Glasgow, Scotland as the Tyrrhenia for the Anchor Line, a subsidiary of Cunard, the 16,243 ton, 578 foot (176 m) long liner could carry 2,200 passengers in three classes. She made her maiden voyage on 19 June 1922.