Jason Robards

Character: Admiral James Sandecker

Richard Jordan

Character: Dirk Pitt

David Selby

Character: Dr. Gene Seagram

Anne Archer

Character: Dana Archibald

Alec Guinness

Character: John Bigalow

Bo Brundin

Character: Captain Prevlov

M. Emmet Walsh

Character: Master Chief Vinnie Walker

J.D. Cannon

Character: Captain Joe Burke

Norman Bartold

Character: Admiral Kemper

Ilya Baskin

Character: Marganin

Dirk Blocker

Character: Merker

Robert Broyles

Character: Willis

Paul Carr

Character: CIA Director Nicholson

Michael C. Gwynne

Character: Bohannon

Harvey Lewis

Character: Kiel

Charles Macaulay

Character: General Dale Busby

Stewart Moss

Character: Koplin

Michael Pataki

Character: Munk

Marvin Silbersher

Character: Soviet Ambassador Antonov

Mark L. Taylor

Character: Spence

Maurice Kowalewski

Character: Dr. Silverstein

Nancy Nevinson

Character: Sarah Martindale

Sander Vanocur

Character: Commentator

Michael Ensign

Character: Lieutenant Northacker

Hilly Hicks

Character: Woodson

Clive Cussler

Character: Bearded Reporter (uncredited)