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 as

Charles Cyphers as

James Davidson as

Ted Gehring as

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