John Mills
— Captain Morgan
Ettore Manni
— Luigi Durand de la Penne
Roberto Risso
— Emilio Bianchi
Robert Shaw
— Lieutenant Field
Liam Redmond
— Surgeon Commander Reilly
Dinsdale Landen
— Norris
John Meillon
— Bedford
Patrick Barr
— Rev. Ellis
Moray Watson
— Capt. Turnbull
Gordon Rollings
— Payne
Laurence Naismith
— Admiral
Leonardo Cortese
— Italian Commander