Rock Hudson

Character: Cdr. James Ferraday

Ernest Borgnine

Character: Boris Vaslov

Patrick McGoohan

Character: David Jones

Jim Brown

Character: Capt. Leslie Anders

Tony Bill

Character: Lt. Russell Walker

Alf Kjellin

Character: Col. Ostrovsky

Gerald S. O'Loughlin

Character: Lt. Cdr. Bob Raeburn

Ted Hartley

Character: Lt. Jonathan Hansen

Murray Rose

Character: Lt. George Mills

Michael T. Mikler

Character: Lt. Courtney Cartwright

Joseph Bernard

Character: Dr. Jack Benning

Jonathan Goldsmith

Character: Russian Aide

Sherwood Price

Character: Lt. Edgar Hackett

Lee Stanley

Character: Lt. Mitgang

John Orchard

Character: Survivor

Jim Dixon

Character: Earl MacAuliffe

Ron Masak

Character: Paul Zabrinczski

Boyd Berlind

Character: Bruce Kentner

Craig Shreeve

Character: Gafferty

Wade Graham

Character: Parker

David Wendel

Character: Cedric Patterson

Ronnie Rondell Jr.

Character: Lyle Nichols

Ted Kristian

Character: Wassmeyer

Lloyd Haynes

Character: Webson

Michael Grossman

Character: Kohler

Buddy Garion

Character: Edward Rawlins

Don Newsome

Character: Timothy Hirsch

Robert Carlson

Character: Kelvaney

William O'Connell

Character: Survivor

Michael Rougas

Character: Fannovich

Gary Downey

Character: Lorrison

T. J. Escott

Character: Lt. Carl Mingus

Jed Allan

Character: Peter Costigan

Buddy Joe Hooker

Character: Hill

Lloyd Nolan

Character: Admiral Garvey

Jim Goodwin

Character: Survivor

William Byron Hillman

Character: Philip Munsey

Dennis Alpert

Character: Gambetta

Budd Albright

Character: Seaman with torpedo accident (uncredited)

John Breen

Character: Bar Patron (uncredited)

Louie Elias

Character: Maneuver Sergeant (uncredited)

Ty Haller

Character: Pvt. Grey (uncredited)

James Jeter

Character: 2nd Barman (uncredited)

Larry Strong

Character: Wardroom Attendent (uncredited)

Elliott Sullivan

Character: Bartender (uncredited)