Tim Turner

as Jason (voice) (uncredited)

as Third Officer Charles Groves

as Officer (line of men in sea) (uncredited)

as Artist (uncredited)

as Peter

as Crewman (uncredited)

as Dr. Kenneth McColl

as Flight Lieutenant J. F. Leggo, D.F.C.

as Alvarez - racer

as British Sergeant

as Dutch Lieutenant

as 1st Reporter

as David Ross

as Narrator

as Dr. Peter Brady / Invisible Man (voice) (uncredited)

as Nick

as Dr. Peter Brady / Invisible Man

as Lieutenant John Wynham