The crew of a submarine is trapped on the sea floor when it sinks. How can they be rescued before they run out of air?
John Mills
Lt. Cmdr. Armstrong
Richard Attenborough
Stoker Snipe
Nigel Patrick
Lt. Manson
George Cole
ERA Marks
Bernard Lee
Cmdr. Gates
Peter Hammond
Sub-Lt. Oakley
Andrew Crawford
Sub-Lt. J. McFee
Michael Brennan
CPO Barlow
