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