Discover
Cliff Robertson
Lt. John F, Kennedy
Ty Hardin
Ensign Leonard J. Thom
James Gregory
Commander C.R. Ritchie
Robert Culp
Ensign George 'Barney' Ross
Grant Williams
Lt. Alvin Cluster
Lew Gallo
Yeoman Rogers
Errol John
Benjamin Kevu
Michael Pate
Lt. Reginald Evans
Robert Blake
Charles 'Bucky' Harris
Biff Elliot
Edgar E. Mauer
Norman Fell
Edmund Drewitch
James McCallion
Pat McMahon
Joseph Gallison
Harold Mamey
William Douglas
Gerald Zinser
Sam Gilman
Raymond Starkey
Clyde Howdy
Leon Drawdy
Buzz Martin
Maurice Kowal
Sam Reese
Andrew Kirksey
Glenn Sipes
William Johnson
John Ward
John Maguire
David Whorf
Raymond Albert
George Takei
Helmsman on Japanese Destroyer (uncredited)
Andrew Duggan
Narrator (uncredited)
Roger Davis
Radioman (uncredited)
Jerry Earle Kraft
Extra (uncredited)
George Gaynes
PT Flotilla Captain (uncredited)
Chuck Hicks
Cook (uncredited)
Dale Ishimoto
Commander (uncredited)
Barney Ross
Chief Benson (uncredited)
Sheb Wooley
Edmund Drewitch's Scream (archive sound) (uncredited)
Camera
Robert Surtees
Director of Photography
Costume & Make-Up
Gordon Bau
Makeup Supervisor
Editing
Folmar Blangsted
Editor
Production
Bryan Foy
Producer
Writing
Richard L. Breen
Screenplay
Howard Sheehan
Adaptation
Vincent X. Flaherty
Adaptation
Robert J. Donovan
Novel
Camera
Robert Surtees
Director of Photography
Costume & Make-Up
Gordon Bau
Makeup Supervisor
Editing
Folmar Blangsted
Editor
Production
Bryan Foy
Producer
Writing
Richard L. Breen
Screenplay
Howard Sheehan
Adaptation
Vincent X. Flaherty
Adaptation
Robert J. Donovan
Novel