Yangtse Incident: The Story of H.M.S. Amethyst is a 1957 British historical drama war film. It features Richard Todd, William Hartnell, Akim Tamiroff, Donald Houston, James Kenney, Barry Foster, Robert Urquhart, and Alfred Burke. In 1949, during the Chinese Civil War, British warship H.M.S. Amethyst lawfully sails up the Yangtse river, but on the return trip finds its way blocked to the open sea by a barrage of fire from Communist Chinese shore batteries.