Cast & Crew
While sailing lawfully up the Yangste 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, Lietenant 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.
The real HMS Amethyst was used at the start of filming. A special effects explosion was made too big and blew a hole in the hull, flooding the engine room. Amethyst was sent to the breakers and HMS Magpie was used for the rest of the film.
HMS Amethyst sustained more damage during filming than during the actual battle.