"A crack team of Italian naval divers plan to attach high explosives to the hulls of Royal navy warships anchored in Gibraltar harbour."
Eleonora Rossi Drago
as Marion
Pierre Cressoy
as Silvano
Carlo Bellini
as
Tino Carraro
as Commander
Giovanni De Fazio
Charles Fawcett
Riccardo Garrone
Paul Müller
as Foreign agent
Rio Nobile
Colombo Pamolli
Paolo Panelli
Mimmo Poli
Giorgio Spaccarelli
Giovanni Tadini
Tsao Hong Tche
Mario Ferrari
as (Voice dubbing for Pierre Cressoy)
Adriana de Roberto
as (Voice dubbing for Eleonora Rossi Drago)
Victor De Sanctis
Underwater Camera
Francesco Solitario
Key Grip
Aldo Tonti
Giovannella Zannoni
Script Supervisor
Duilio Coletti
Director
Giuseppe Berto
Writer
Marc-Antonio Bragadin
Enzo Cossa
Ennio De Concini
Francesco De Robertis
Producer
Luigi De Laurentiis
Nino Rota
Original Music Composer
Director of Photography
Gisa Radicchi Levi
Editor
Mario Rappini
Production Design
Costume Design
David Carbonari
Assistant Director
Gian Giacomo Cossa
Aldo Calpini
Sound
Paolo Uccello