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
Ron Masak
Paul Zabrinczski
Boyd Berlind
Bruce Kentner
David Wendel
Cedric Patterson
Ronnie Rondell Jr.
Lyle Nichols
Buddy Garion
Edward Rawlins
Don Newsome
Timothy Hirsch
William O'Connell
Survivor
T. J. Escott
Lt. Carl Mingus
Lloyd Nolan
Admiral Garvey
William Byron Hillman
Philip Munsey
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)