John CliffordGerman Submarine Crewman (uncredited) Harry FielderGerman Submarine Crewman (uncredited) George RoubicekGerman Submarine Crewman (uncredited) Bob SimmonsGerman Submarine Crewman (uncredited) Stirling SilliphantScreenplay Luis Guillermo Villegas BlancoProducer Douglas SlocombeDirector Of Photography Luis Armando RocheAssistant Director Robin GregorySound Recordist 
