Joe Ryan

Bill Travers

Acting

Sam Slade

William Sylvester

Acting

Sean

Vincent Winter

Acting

McCartin

Christopher Rhodes

Acting

Prof. Hendricks

Joseph O'Conor

Acting

Prof. Flaherty

Bruce Seton

Acting

Dorkin

Martin Benson

Acting

Radio Reporter

Maurice Kaufmann

Acting

Admiral Brooks

Basil Dignam

Acting

Mate

Barry Keegan

Acting

First Naval Officer

Tommy Duggan

Acting

First Colonel

Howard Lang

Acting

Bosun

Dervis Ward

Acting

Gorgo

Mick Dillon

Acting

Bulletin Announcer (Uncredited)

Nigel Green

Acting