Bill Travers
Joe Ryan
Acting
William Sylvester
Sam Slade
Acting
Vincent Winter
Sean
Acting
Christopher Rhodes
McCartin
Acting
Joseph O'Conor
Prof. Hendricks
Acting
Bruce Seton
Prof. Flaherty
Acting
Martin Benson
Dorkin
Acting
Maurice Kaufmann
Radio Reporter
Acting
Basil Dignam
Admiral Brooks
Acting
Barry Keegan
Mate
Acting
Tommy Duggan
First Naval Officer
Acting
Howard Lang
First Colonel
Acting
Dervis Ward
Bosun
Acting
Mick Dillon
Gorgo
Acting
Nigel Green
Bulletin Announcer (Uncredited)
Acting