Henry Limpet

Don Knotts

Acting

Bessie Limpet

Carole Cook

Acting

George Stickel

Jack Weston

Acting

Harlock

Andrew Duggan

Acting

Admiral P.P. Spewter

Larry Keating

Acting

Nazi Admiral (as Oscar Beregi)

Oscar Beregi Jr.

Acting

Fleet Admiral

Charles Meredith

Acting

Ladyfish (voice)

Elizabeth MacRae

Acting

Crusty (voice)

Paul Frees

Acting

Man Staring Into Window (uncredited)

Wesley Gale

Acting

Officer at Fleet Admiral's Meeting (uncredited)

Leon Alton

Acting

Short Fisherman (uncredited)

Phil Arnold

Acting

Nazi Officer (uncredited)

George Bruggeman

Acting

Sonar Man (uncredited)

Paul Busch

Acting

Sailor (uncredited)

Al Checco

Acting

Giggling Girl (uncredited)

Cordy Clark

Acting

Sailor (uncredited)

Roydon Clark

Crew

Passerby/Naval Officer at Meeting (uncredited)

Sayre Dearing

Acting

Nazi Officer (uncredited)

George DeNormand

Acting

Naval Officer at Meeting (uncredited)

Dan Dowling

Acting

U-Boat Captain (uncredited)

Harold Dyrenforth

Acting

Sailor (uncredited)

Louie Elias

Acting

Miss Barnes (uncredited)

Lisabeth Field

Acting

Lieutenant (uncredited)

Logan Field

Acting

Officer at Fleet Admiral's Meeting (uncredited)

Fred Fisher

Acting

Nazi Officer (uncredited)

Walter Friedel

Acting

Naval Officer at Fleet Admiral Meeting (uncredited)

George Golden

Acting

Nazi Officer (uncredited)

Marv Goux

Acting

Sailor (uncredited)

John Hale

Acting

Officer at Fleet Admiral's Briefing (uncredited)

Sam Harris

Acting

Scientist (uncredited)

George Holmes

Acting

Officer at Fleet Admiral's Briefing (uncredited)

Joseph La Cava

Acting

Naval Officer at Meeting (uncredited)

Mike Lally

Acting

Officer at Fleet Admiral's Briefing (uncredited)

Harold Miller

Acting

Boat Captain (uncredited)

Charles Morton

Acting

Sailor (uncredited)

Henry Norell

Acting

Sport Fishmern (uncredited)

Jack Pepper

Acting

Helmsman (uncredited)

Montie Plyler

Acting

Submarine Captain (uncredited)

Felix Reinsch

Acting

Passerby (uncredited)

Waclaw Rekwart

Acting

Sonar Man (uncredited)

Heinz Sadler

Acting

Old Man in Shipping Office (uncredited)

Scott Seaton

Acting

Sailor (uncredited)

Jack Shea

Acting

Policeman (uncredited)

John Truax

Acting

Scientist (uncredited)

Edward Wermel

Acting

Scientist (uncredited)

Feridun Çölgeçen

Acting

Lieutenant (uncredited)

Peter Adams

Acting