Film on submarine escape made for DNR, 1951. Includes escape material from the film MORNING DEPARTURE and Cox's bolt gun demonstration. The film presents an example of escape from a sunken submarine, identified as TROJAN. Following inspection of the vessel from a diver, a Cox Bolt Gun is shown being prepared for use. Making use of the bolt gun, the diver provides the trapped submariniers with an air-line. Submariners then make their escape through the top hatch, rising to the surface.