Cast
Bobby Herbeck
Sonarman
Joseph Cotten
Admiral
William Windom
Capt. Frank Reardon
Lloyd Haynes
Lt. Dave Burston
Dewey Martin
Skip Langley
Malachi Throne
Dr. Dykers
Sam Elliott
Ens. William 'Bill' Sandover
John Winston
English Scientist
Larry McCormick
Radio Operator
Leonard Nimoy
Comdr. Phil Kettenring
Ivor Barry
Donald Ellington
Ron Masak
CPO Corky Schmidt
Keenan Wynn
Orville Kelly