All Cast
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
Wylie Watson
Helen Cherry
Lana Morris
Victor Maddern
Kenneth More
Zena Marshall
James Hayter
Frank Coburn
Leading Seaman Brough
Roddy McMillan
Leading Seaman Andrews
Jack Stewart
Leading Seaman Kelly
George Thorpe
Capt. Fenton
