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