Characters played by Gerald Flood
Mark Bannerman
Characters played by Stewart Guidotti
Peter Blake
Characters played by Peter Williams
Capt. Payne
Characters played by Richard Coleman
Dr. Deraad
Characters played by Michael Darlow
Helmsman
Characters played by Denis Goacher
Kurt Swendler
Characters played by Brian Hawksley
Doctor
Characters played by Murray Hayne
Sanders
Characters played by Robert James
Professor Gordon
Characters played by Peter Jesson
Sentry
Characters played by Delena Kidd
Dr. Ellen Carey
Characters played by Christopher Sandford
Seaman
Characters played by Derek Smee
Engineer
Characters played by Reginald Smith
Sir George
Characters played by David Spenser
Prof. Soobiah
Characters played by Ingrid Sylvester
Janet Slayton
Characters played by Harry Webster
Tug master
Characters played by Anthony Woodruff
Inspector Lovatt