The Silent Enemy

Laurence Harvey

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

Michael Craig

Leading Seaman Knowles

Dawn Addams

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

John Clements

The Admiral

Sidney James

Chief Petty Officer Thorpe

Alec McCowen

Able Seaman Morgan

Nigel Stock

Able Seaman Fraser

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Ian Whittaker

Ordinary Seaman Thomas

Arnoldo Foà

Tomolino

Gianna Maria Canale

Conchita

Massimo Serato

Forzenelli

Giacomo Rossi Stuart

Rosati

Carlo Giustini

Fellini

Raymond Young

Celloni

David Lodge

Sergeant

Ewen Solon

Willowdale Captain

Brian Oulton

Holford

Howard Marion-Crawford

Wing Commander

Cyril Shaps

Miguel

Lee Montague

Miguel's Mate