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