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
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
Glenn Sipes
William Johnson
David Whorf
Raymond Albert
George Takei
Helmsman on Japanese Destroyer (uncredited)
Andrew Duggan
Narrator (uncredited)
Roger Davis
Radioman (uncredited)
Jerry Earle Kraft
Extra (uncredited)
