Morning Departure

World War Two thriller starring John Mills. While out on routine patrol, the Royal Navy submarine Trojan accidentally strikes an electronically-operated drifting mine, and plunges immediately to the sea bed. As time - and air - start to run out, the Captain, Lt Cmdr Armstrong (Mills) gathers the handful of survivors together and tries to figure out the best means of escape. Richard Attenborough and Nigel Patrick co-star.