Cast
Tony Wager
George
Thomas Heathcote
Hutchins
John Horsley
Lt. Anderson
Walter Gotell
German Officer on Tirpitz
John Gregson
Lieutenant Alec Duffy
Michael Medwin
Smart
Harry Towb
McCleery
Cyril Chamberlain
CPO Chubb
Guido Lorraine
Officer Interpreter
Barry Keegan
Sailor on Towing Sub (uncredited)
Frank Lawton
Naval Officer in Briefing Room (uncredited)
John Mills
Commandant Fraser
Donald Sinden
Lieutenant Tom Corbett
James Robertson Justice
Admiral Ryder
James Kenney
Abercrombie
Lee Patterson
Cox
Lyndon Brook
Diver Navigator, X2
Anthony Newley
Engineer, X2
Raymond Francis
Officer on Towing Sub. (1)
Theodore Bikel
German Officer
William Russell
Ramsey
O.E. Hasse
Captain of the Tirpitz
William Franklyn
No. 1, X2