
The Mediterranean, 1941/42 - Axis forces are using frogmen and manned torpedoes to attack previously impregnable harbours. The Allied forces need to come up with something to answer this threat, which they find in the form of Lt. Lionel "Buster" Crabb.

as Lieutenant "Buster" Crabb, R.N.V.R.

as Leading Seaman Knowles

as Third Officer Jill Masters, W.R.N.S

as The Admiral

as Chief Petty Officer Thorpe

as Able Seaman Morgan

as Able Seaman Fraser

as Ordinary Seaman Thomas

as Tomolino

as Conchita

as Forzenelli

as Rosati

as Fellini

as Celloni

as Sergeant

as Willowdale Captain

as Holford

as Wing Commander

as Miguel

as Miguel's Mate

as Flag Lt.

as Lt Bailey

as Admiralty Sentry

as British Consul

as Diver

as Army Interrogation Officer

as Naval Interrogation Officer

as Navy Doctor

as Patrol Boat Officer

as Spanish Girl

as Sailor