Henry Limpet
Bessie Limpet
George Stickel
Harlock
Admiral P.P. Spewter
Nazi Admiral (as Oscar Beregi)
Fleet Admiral
Ladyfish (voice)
Crusty (voice)
Man Staring Into Window (uncredited)
Officer at Fleet Admiral's Meeting (uncredited)
Short Fisherman (uncredited)
Nazi Officer (uncredited)
Sonar Man (uncredited)
Sailor (uncredited)
Giggling Girl (uncredited)
Passerby/Naval Officer at Meeting (uncredited)
Naval Officer at Meeting (uncredited)
U-Boat Captain (uncredited)
Miss Barnes (uncredited)
Lieutenant (uncredited)
