Kerwin Mathews
Jonathon Standing
Christopher Lee
Captain LaRoche
Andrew Keir
Jason Standing
Glenn Corbett
Henry
Michael Ripper
First Mate Mack
Peter Arne
Bosu'n Hench
Marla Landi
Bess Standing
Oliver Reed
Pirate Brocaire
Marie Devereux
Maggie Mason (uncredited)
Jerold Wells
Penal Colony Master
Dennis Waterman
Timothy Blackthorne, the boy
David Lodge
Smith
Jack Stewart
Godfrey Mason
Emile Stemmler
A villager (uncredited)
Bert Simms
Old Townsman (uncredited)
Denis Shaw
Silver (uncredited)
John Roden
2nd Settler (uncredited)
Ernie Rice
Pirate (uncredited)
Keith Pyott
Silas (uncredited)
Dido Plumb
Prisoner (uncredited)
Michael Peake
Kemp (uncredited)
Michael Mulcaster
Martin (uncredited)
Desmond Llewelyn
Tom Blackthorne (uncredited)
Don Levy
Carlos (uncredited)
George Hilsdon
Penal Colony Guard (uncredited)
John Collin
Lance (uncredited)
Bill Brandon
Pirate (uncredited)
Jim Brady
Pirate (uncredited)
Ronald Blackman
Pugh (uncredited)
Richard Bennett
Seymour (uncredited)
John Bennett
Penal Colony Guard (uncredited)
Diane Aubrey
Margaret Blackthorne (uncredited)