扬子江突围记 Yangtse Incident: The Story of H.M.S. Amethyst‎

　　While sailing lawfully up the Yangste river in 1949, the British warship Amethyst found its return to the open sea blocked by Communist Chinese shore batteries that unexpectedly opened fire. In charge, Lieutenant Commander Kerans was not however prepared for his crew and his ship to remain as a hostage for the Chinese to use as an international pawn.