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)
Douglas Heyes
Screenplay
Alistair MacLean
Novel
John Sturges
Director
Art Levinson
Second Assistant Director
Peter R.J. Deyell
Makeup Artist
John Truwe
Makeup Artist
Franklin Milton
Sound Recordist
Jack Wilson
Stunts
Terry Leonard
Stunts
John Moio
Stunts
Van Allen James
Sound Editor
Loren Janes
Stunts
Ronnie Rondell Jr.
Stunts
Glenn R. Wilder
Stunts
Phil Adams
Stunts
Louie Elias
Stunts
Dick Warlock
Stunts
Lee Faulkner
Stunts
Roydon Clark
Stunts
Gary McLarty
Stunts
Budd Albright
Stunts
Bob Herron
Stunt Coordinator
Henry Grace
Set Decoration
James C. Pratt
Associate Producer
Ferris Webster
Editor
George W. Davis
Art Direction
Addison Hehr
Art Direction
Michel Legrand
Original Music Composer
Daniel L. Fapp
Director of Photography
Martin Ransohoff
Producer
John Calley
Producer
Gary Downey
Stunts
W.R. Burnett
Screenplay
Michel Legrand
Conductor
John M. Stephens
Additional Photography
Ralph W. Nelson
Unit Production Manager
Franklin Milton
Recording Supervision
Thomas J. Schmidt
Assistant Director
William Tuttle
Makeup Artist
Carroll L. Shepphird
Visual Effects
Normal Stuart
Dialogue Coach
J. McMillan Johnson
Visual Effects
Robert R. Hoag
Special Effects
Ralph Swartz
Special Effects
Jack Mills
Set Decoration
Clarence Slifer
Visual Effects
Nelson Tyler
Additional Photography
Earl McCoy
Special Effects
Harry Julian Fink
Screenstory
John M. Connolly
Technical Advisor
Henry Millar
Special Effects
Dick Ziker
Stunts
Lynn Guthrie
Second Assistant Director