Commandant Fraser

John Mills

Acting

Lieutenant Alec Duffy

John Gregson

Acting

Lieutenant Tom Corbett

Donald Sinden

Acting

Admiral Ryder

James Robertson Justice

Acting

Smart

Michael Medwin

Acting

German Officer

Theodore Bikel

Acting

Abercrombie

James Kenney

Acting

Ramsey

William Russell

Acting

Captain of the Tirpitz

O.E. Hasse

Acting

Cox

Lee Patterson

Acting

McCleery

Harry Towb

Acting

CPO Chubb

Cyril Chamberlain

Acting

George

Tony Wager

Acting

Winley

Leslie Weston

Acting

Diver Navigator, X2

Lyndon Brook

Acting

Hutchins

Thomas Heathcote

Acting

Engineer, X2

Anthony Newley

Acting

Lt. Anderson

John Horsley

Acting

No. 1, X2

William Franklyn

Acting

Officer Interpreter

Guido Lorraine

Acting

Officer on Towing Sub. (1)

Raymond Francis

Acting

Officer on Towing Sub. (2)

Basil Appleby

Acting

German Officer on Tirpitz

Walter Gotell

Acting

RAF Officer (uncredited)

Victor Harrington

Acting

German Navy Officer (uncredited)

Arthur Howell

Acting

Sailor on Towing Sub (uncredited)

Barry Keegan

Acting

Naval Officer in Briefing Room (uncredited)

Frank Lawton

Acting