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