Will Fyffe
Chief
Anthony Hulme
Steve
E. V. H. Emmett
Ted / Commentator
Guy Middleton
Pierre
Albert Lieven
Fritz
Hugh McDermott
Sam
Arthur Goullet
Ivan
Engineer Angel
Himself - Engineer Angel, S.S. Tairoa
Patrick Dove
Himself - Captain Patrick G.G. Dove, S.S. Africa Shell
J.E.T. Harper
Narrator
Aubrey Jenkins
Himself - Enginer-Officer Aubrey Jenkins, S.S. Doric Star
Miles Malleson
Minor Role
First Officer Murphy
Himself - First Officer F.M. Murphy, S.S. Tairoa
Charles Pottinger
Himself - Captain Charles Pottinger, S.S. Ashlea
Jack Raine
Cutter
Bill Russell
Adolf Hitler
Terry-Thomas
News reader
Engineer Walker
Himself - Engineer Walker, S.S. Tairoa
Millicent Wolf
Secretary
Pat Williams
Cutter