Charlton Heston

as Captain Paul Blanchard

David Carradine

as Captain Gates

Stacy Keach

as Captain Bennett

Ned Beatty

as Mickey

Stephen McHattie

as Murphy

Ronny Cox

as Commander Samuelson

Dorian Harewood

as Fowler

Rosemary Forsyth

as Vickie Blanchard

Hilly Hicks

as Page

Charles Cioffi

as Admiral Barnes

William Jordan

as Waters

Jack Rader

as Harkness

Antony Ponzini

as Caruso

Michael O'Keefe

as Harris

Charles Robinson

as McAllister

Christopher Reeve

as Phillips

Melendy Britt

as Liz Bennett

Jeffrey Druce

Charles Cyphers

James Davidson

Ted Gehring

Robert Symonds

as Secretary of Navy

David Wilson

as Hanson

Lawrason Driscoll

as Lieutenant Bloome

David Clennon

as USS Neptune Crewmember

John Stuart West

as Submariner