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
Sam Gilman
Raymond Starkey
Buzz Martin
Maurice Kowal
John Ward
John Maguire
George Takei
Helmsman on Japanese Destroyer (uncredited)
Andrew Duggan
Narrator (uncredited)
Roger Davis
Radioman (uncredited)
William Douglas
Gerald Zinser
Clyde Howdy
Leon Drawdy
Sam Reese
Andrew Kirksey
Glenn Sipes
William Johnson
David Whorf
Raymond Albert
Jerry Earle Kraft
Extra (uncredited)
