Jason Robards

Admiral James Sandecker

Richard Jordan

Dirk Pitt

David Selby

Dr. Gene Seagram

Anne Archer

Dana Archibald

Alec Guinness

John Bigalow

Bo Brundin

Captain Prevlov

M. Emmet Walsh

Master Chief Vinnie Walker

J.D. Cannon

Captain Joe Burke

Norman Bartold

Admiral Kemper

Elya Baskin

Marganin

Dirk Blocker

Merker

Robert Broyles

Willis

Paul Carr

CIA Director Nicholson

Michael C. Gwynne

Bohannon

Harvey Lewis

Kiel

Charles Macaulay

General Dale Busby

Stewart Moss

Koplin

Michael Pataki

Munk

Marvin Silbersher

Soviet Ambassador Antonov

Mark L. Taylor

Spence

Maurice Kowalewski

Dr. Silverstein

Nancy Nevinson

Sarah Martindale

Sander Vanocur

Commentator

Michael Ensign

Lieutenant Northacker

Hilly Hicks

Woodson

Clive Cussler

Bearded Reporter (uncredited)