John Mills
Commandant Fraser
John Gregson
Lieutenant Alec Duffy
Donald Sinden
Lieutenant Tom Corbett
James Robertson Justice
Admiral Ryder
Theodore Bikel
German Officer
O.E. Hasse
Captain of the Tirpitz
Cyril Chamberlain
CPO Chubb
Lyndon Brook
Diver Navigator, X2
Anthony Newley
Engineer, X2
William Franklyn
No. 1, X2
Guido Lorraine
Officer Interpreter
Raymond Francis
Officer on Towing Sub. (1)
Basil Appleby
Officer on Towing Sub. (2)
Walter Gotell
German Officer on Tirpitz
Victor Harrington
RAF Officer (uncredited)
Arthur Howell
German Navy Officer (uncredited)
Barry Keegan
Sailor on Towing Sub (uncredited)
Frank Lawton
Naval Officer in Briefing Room (uncredited)
