Amanda Marvin
Barbara Bach
Lt. Claude de Ross
Claudio Cassinelli
Radcliffe (US version)
Mel Ferrer
Samantha (US Version)
Eunice Bolt
James (US version)
Jim Alquist
Patterson (US version)
Tom J. Delaney
Rackham's Servant (uncredited)
Bobby Rhodes
Prisoner on Lifeboat(uncredited)
Riccardo Petrazzi
Edmond Rackham
Richard Johnson
Shakira
Beryl Cunningham
Prof. Ernest Marvin
Joseph Cotten
Jose
Franco Javarone
Peter
Roberto Posse
Skip
Giuseppe Castellano
Francois
Franco Mazzieri
Decker (US version)
Cameron Mitchell
Director
Sergio Martino
Screenplay
Executive Producer
Roger Corman
Director of Photography
Giancarlo Ferrando
Production Design
Massimo Antonello Geleng
Producer
Luciano Martino
Story
Sergio Donati
Cesare Frugoni
Original Music Composer
Luciano Michelini
Editor
Eugenio Alabiso
Costume Design
Maria Rosaria Crimi
Makeup Artist
Pamela Peitzman
Assistant Makeup Artist
Mark Walas
Manlio Rocchetti
Stefano Trani
Special Effects Makeup Artist
Chris Walas
Kenny Myers
Sound Engineer
Roberto Petrozzi
Second Assistant Director
Steve Jerrom
Nilo Jacoponi
Sound Mixer
Bruno Moreal