Admiral Harriman Nelson
Captain Lee Crane
Lieutenant Cathy Conners
Comm. Lucius Emery
Dr. Susan Hiller
Dr. Miguel Alvares
Lieutenant Chip Romano
Dr. Jamieson
Vice Admiral B.J. Crawford
Congressman Llewellyn Parker
Dr. Zucco
Sparks
CPO Mack Gleason
Seaman Jimmy 'Red' Smith
Seaman Kowski
Seaman George Young
Cookie
Crew Member
Crew Member
Crew Member (Uncredited)
Crew Member (Uncredited)
Crew Member (Uncredited)
Crew Member (Uncredited)
Lieutenant Hodges (Uncredited)
Dr. Newmar (Uncredited)
Ned Thompson (Uncredited)
Officer (Uncredited)
Seaview Pilot (Uncredited)
UN Committee Chairman (Uncredited)
UN Commentator (Uncredited)
Guard (Uncredited)
Guard (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Delegate (Uncredited)
Crew Member (uncredited)