Rock Hudson
Cdr. James Ferraday
Ernest Borgnine
Boris Vaslov
Patrick McGoohan
David Jones
Jim Brown
Capt. Leslie Anders
Tony Bill
Lt. Russell Walker
Alf Kjellin
Col. Ostrovsky
Gerald S. O'Loughlin
Lt. Cdr. Bob Raeburn
Ted Hartley
Lt. Jonathan Hansen
Murray Rose
Lt. George Mills
Michael T. Mikler
Lt. Courtney Cartwright
Joseph Bernard
Dr. Jack Benning
Jonathan Goldsmith
Russian Aide
Sherwood Price
Lt. Edgar Hackett
Lee Stanley
Lt. Mitgang
John Orchard
Survivor
Jim Dixon
Earl MacAuliffe
Ron Masak
Paul Zabrinczski
Boyd Berlind
Bruce Kentner
Craig Shreeve
Gafferty
Wade Graham
Parker
David Wendel
Cedric Patterson
Ronnie Rondell Jr.
Lyle Nichols
Ted Kristian
Wassmeyer
Lloyd Haynes
Webson
Michael Grossman
Kohler
Buddy Garion
Edward Rawlins
Don Newsome
Timothy Hirsch
Robert Carlson
Kelvaney
William O'Connell
Survivor
Michael Rougas
Fannovich
Gary Downey
Lorrison
T. J. Escott
Lt. Carl Mingus
Jed Allan
Peter Costigan
Buddy Joe Hooker
Hill
Lloyd Nolan
Admiral Garvey
Jim Goodwin
Survivor
William Byron Hillman
Philip Munsey
Dennis Alpert
Gambetta
Budd Albright
Seaman with torpedo accident (uncredited)
John Breen
Bar Patron (uncredited)
Louie Elias
Maneuver Sergeant (uncredited)
Ty Haller
Pvt. Grey (uncredited)
James Jeter
2nd Barman (uncredited)
Larry Strong
Wardroom Attendent (uncredited)
Elliott Sullivan
Bartender (uncredited)