Narrator
Jason (voice) (uncredited)
1st Reporter
Artist (uncredited)
Commentator
Self - Commentator
Officer (line of men in sea) (uncredited)
Dr. Kenneth McColl
Rupert
Dutch Lieutenant
Peter
Frank Mason
Alvarez - racer
Tommy Dykes
Flight Lieutenant J. F. Leggo, D.F.C.
Third Officer Charles Groves
Narrator & Commentator
British Sergeant
David Ross
Dr. Peter Brady / Invisible Man (voice) (uncredited)
Lieutenant John Wynham
Nick