1. Bölüm

William Sylvester

Admiral Prescott

Pamela Hensley

Cynthia Grayland

Gregory Walcott

Alex Parker

Stephen Elliott

Morgan Grayland

Josh Taylor

Captain Bob Welbeck

John de Lancie

Diver

Marc Alaimo

Williams

Gene D. Jackson

Walker

Frank Whiteman

Arnold Crane

Kopi Sotiropulos

Seaman

David Mark Glicker

Steersman

Tim Haldeman

Hydraphone Operator