George Takei

Helmsman on Japanese Destroyer (uncredited)

Robert Culp

Ensign George 'Barney' Ross

Norman Fell

Edmund Drewitch

Cliff Robertson

Lt. John F, Kennedy

Lew Gallo

Yeoman Rogers

James Gregory

Commander C.R. Ritchie

Joseph Gallison

Harold Mamey

Ty Hardin

Ensign Leonard J. Thom

Grant Williams

Lt. Alvin Cluster

Errol John

Benjamin Kevu

Michael Pate

Lt. Reginald Evans

Robert Blake

Charles 'Bucky' Harris

Biff Elliot

Edgar E. Mauer

James McCallion

Pat McMahon

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

Andrew Duggan

Narrator (uncredited)

Roger Davis

Radioman (uncredited)

Leslie H. Martinson

Director