Alec Guinness

Captain Crawford

Dirk Bogarde

Lieut. Scott-Padget

Anthony Quayle

Vizard

Maurice Denham

Mr. Goss (Ship's Surgeon)

Nigel Stock

Senior Midshipman Kilpatrick

Tom Bell

Evans

Richard Carpenter

Lieut. Posonby

Ray Brooks

Hayes

Robin Stewart

Pardoe

Murray Melvin

Wagstaffe

Victor Maddern

Dawlish

Bryan Pringle

Sgt Kneebone

Johnny Briggs

Wheatley

Toke Townley

Silly Billy

Brian Phelan

Grimshaw

Walter Fitzgerald

Admiral Jackson

Joy Shelton

Mrs Crawford

Russell Napier

Flag Captain

Michael Coles

Flag Lieutenant

André Maranne

Col. Giraud

Del Baker

Marine Captain (uncredited)

James Bolam

Midshipman (uncredited)

Tom Bowman

Bosun (uncredited)

Jim Brady

Press Gang (uncredited)

Ann Lynn

Young Wife of Pressed Crewman (uncredited)

Alf Mangan

Sailor (uncredited)