Ralph Wheelwright (Story) · Wells Root (Screenplay) · Harvey S. Haislip (Story) · George B. Seitz (Director)
Wallace Beery
John Thorson
Chester Morris
'Rocky' Blake
Virginia Grey
Susan Thorson
Douglass Dumbrille
District Commander
Carl Esmond
U-Boat Captain
Clem Bevans
'Cap' Finch
John Qualen
Milo
Regis Toomey
Ives
Henry Victor
German U-Boat Officer
Addison Richards
Admiral Ross
Hans Joby
U-Boat Petty Officer
Henry Hunter
Ensign Dyer
Jonathan Hale
Admiral Girard
Leon Ames
Recruiting Officer (uncredited)
Arthur Belasco
Fisherman (uncredited)
Joseph E. Bernard
Fisherman (uncredited)
Wade Boteler
Recruiting Officer (uncredited)
Al Bridge
Fisherman (uncredited)
Rand Brooks
Listener (uncredited)
Don Castle
Radio Operator (uncredited)
Jack Chapin
Sailor (uncredited)
Tom Chatterton
Lieutenant (uncredited)
Jack Rube Clifford
Captain (uncredited)
Jules Cowles
Man with Finch (uncredited)
Leigh De Lacey
Mrs. Gill (uncredited)
Joe De Stefani
Fisherman (uncredited)
Edgar Dearing
Petty Officer (uncredited)
Richard Elmore
Lookout (uncredited)
Frank Faylen
Recruiting Officer (uncredited)
Budd Fine
Survivor (uncredited)
Allen Fox
Lookout (uncredited)
Frederick Lee
Sailor (uncredited)
Eddie Hart
Fisherman (uncredited)
Edward Hearn
Fisherman (uncredited)
Howard Hickman
Surgeon (uncredited)
Earle Hodgins
Fisherman (uncredited)
Clarke Jennings
Wireless Operator (uncredited)
Payne B. Johnson
Boy (uncredited)
Charles Jordan
Signalman (uncredited)
Lew Kelly
Sailor (uncredited)
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A tugboat captain serves under his rival as a U-boat chaser in World War I.
