John 'Pop' Thorson

Wallace Beery

Richard 'Rocky' Blake

Chester Morris

Susan 'Suzy' Thorson

Virginia Grey

District Commander

Douglass Dumbrille

U-Boat Captain

Carl Esmond

`Cap' Finch

Clem Bevans

Milo

John Qualen

Ives

Regis Toomey

German U-Boat Captain

Henry Victor

Admiral Ross

Addison Richards

U-Boat Petty Officer

Hans Joby

Ensign Dyer

Henry Hunter

Admiral Girard

Jonathan Hale

Recruiting Officer (uncredited)

Leon Ames

Capt. Sabin

Charles Lane

Fisherman (uncredited)

Arthur Belasco

Lt. West

Phillip Terry

Recruiting Officer (uncredited)

Wade Boteler

Fisherman (uncredited)

Joseph E. Bernard

Fisherman (uncredited)

Al Bridge

Shore Patrol Sailor (uncredited)

Harry Strang

Recruiting Officer (uncredited)

Frank Faylen

Listener (uncredited)

Rand Brooks

Mrs. Gill

Leigh De Lacy

Radio Operator (uncredited)

Don Castle

Fisherman (uncredited)

Milt Kibbee

Sailor (uncredited)

Jack Chapin

Lieutenant (uncredited)

Tom Chatterton

Radio Operator (uncredited)

Larry McGrath

Captain (uncredited)

Jack Rube Clifford

Orderly (uncredited)

Roger Moore

Man with Finch (uncredited)

Jules Cowles

Surgeon (uncredited)

Howard Hickman

Mrs. Gill (uncredited)

Leigh De Lacey

Fisherman (uncredited)

Joe De Stefani

Fisherman (uncredited)

Philip Morris

Young German Sailor (uncredited)

Walter Thiele

Petty Officer (uncredited)

Edgar Dearing

Lookout (uncredited)

Richard Elmore

Survivor (uncredited)

Budd Fine

Nurse (uncredited)

Claire McDowell

German Officer (uncredited)

Wolfram Von Bock

Signal Man

Charles Johnson

Lookout (uncredited)

Allen Fox

Sailor (uncredited)

Frederick Lee

Franchot Tone

Fisherman (uncredited)

Eddie Hart

Fisherman (uncredited)

Edward Hearn

Fisherman (uncredited)

Earle Hodgins

Wireless Operator (uncredited)

Clarke Jennings

Boy (uncredited)

Payne B. Johnson

Signalman (uncredited)

Charles Jordan

Sailor (uncredited)

Lew Kelly

Fisherman (uncredited)

Jack Kennedy

Naval Aide (uncredited)

Forbes Murray

Old Sailor in Bilge Area (uncredited)

Frank Orth

Wireless Operator Sending Coded Message (uncredited)

Syd Saylor

Engineer (uncredited)

Harold Schlickenmayer

German Operator (uncredited)

Ferdinand Schumann-Heink

German Sailor Looking for Wireless (uncredited)

Hans Schumm

Cook on Tugboat (uncredited)

Harry Semels

Sailor (uncredited)

Lee Shumway

German Sailor (uncredited)

Robert R. Stephenson

Junior Officer Standing by Map (uncredited)

Emmett Vogan

German Sailor (uncredited)

Hans von Morhart

Sailor (uncredited)

Doodles Weaver