- 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)
- 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)
- Payne B. Johnson - Boy (uncredited)
- Charles Jordan - Signalman (uncredited)
- Lew Kelly - Sailor (uncredited)
- Jack Kennedy - Fisherman (uncredited)
- Milton Kibbee - Fisherman (uncredited)
- Claire McDowell - Nurse (uncredited)
- Larry McGrath - Radio Operator (uncredited)
- Roger Moore - Orderly (uncredited)
- Forbes Murray - Naval Aide (uncredited)
- Frank Orth - Old Sailor in Bilge Area (uncredited)
- Syd Saylor - Wireless Operator Sending Coded Message (uncredited)
- Ferdinand Schumann-Heink - German Operator (uncredited)
- Hans Schumm - German Sailor Looking for Wireless (uncredited)
- Harry Semels - Cook on Tugboat (uncredited)
- Lee Shumway - Sailor (uncredited)
- Robert R. Stephenson - German Sailor (uncredited)
- Harry Strang - Shore Patrol Sailor (uncredited)
- Emmett Vogan - Junior Officer Standing by Map (uncredited)
- Hans von Morhart - German Sailor (uncredited)
- Doodles Weaver - Sailor (uncredited)
- George B. Seitz
-
Harvey S. Haislip, Wells Root
-
J. Walter Ruben
- David Snell
- Douglas Shearer
Wallace Beery hace el papel de John Thorson.
Chester Morris hace el papel de 'Rocky' Blake.
Virginia Grey interpreta a Susan Thorson en la película.
Douglass Dumbrille interpreta a District Commander en la película.
Carl Esmond hace el papel de U-Boat Captain.
Clem Bevans hace el papel de 'Cap' Finch.
John Qualen interpreta a Milo en la película.
Regis Toomey interpreta a Ives en la película.
Henry Victor hace el papel de German U-Boat Officer.
Addison Richards interpreta a Admiral Ross en la película.
Hans Joby hace el papel de U-Boat Petty Officer.
Henry Hunter interpreta a Ensign Dyer en la película.
Jonathan Hale hace el papel de Admiral Girard.
Leon Ames interpreta a Recruiting Officer (uncredited) en la película.
Arthur Belasco interpreta a Fisherman (uncredited) en la película.
Joseph E. Bernard interpreta a Fisherman (uncredited) en la película.
Wade Boteler interpreta a Recruiting Officer (uncredited) en la película.
Al Bridge interpreta a Fisherman (uncredited) en la película.
Rand Brooks interpreta a Listener (uncredited) en la película.
Don Castle interpreta a Radio Operator (uncredited) en la película.
Jack Chapin interpreta a Sailor (uncredited) en la película.
Tom Chatterton interpreta a Lieutenant (uncredited) en la película.
Jack Rube Clifford interpreta a Captain (uncredited) en la película.
Jules Cowles interpreta a Man with Finch (uncredited) en la película.
Leigh De Lacey hace el papel de Mrs. Gill (uncredited).
Joe De Stefani interpreta a Fisherman (uncredited) en la película.
Edgar Dearing interpreta a Petty Officer (uncredited) en la película.
Richard Elmore hace el papel de Lookout (uncredited).
Frank Faylen interpreta a Recruiting Officer (uncredited) en la película.
Budd Fine interpreta a Survivor (uncredited) en la película.
Allen Fox interpreta a Lookout (uncredited) en la película.
Frederick Lee interpreta a Sailor (uncredited) en la película.
Eddie Hart hace el papel de Fisherman (uncredited).
Edward Hearn interpreta a Fisherman (uncredited) en la película.
Howard Hickman interpreta a Surgeon (uncredited) en la película.
Earle Hodgins interpreta a Fisherman (uncredited) en la película.
Clarke Jennings interpreta a Wireless Operator (uncredited) en la película.
Payne B. Johnson interpreta a Boy (uncredited) en la película.
Charles Jordan interpreta a Signalman (uncredited) en la película.
Lew Kelly hace el papel de Sailor (uncredited).
Jack Kennedy interpreta a Fisherman (uncredited) en la película.
Milton Kibbee interpreta a Fisherman (uncredited) en la película.
Claire McDowell interpreta a Nurse (uncredited) en la película.
Larry McGrath interpreta a Radio Operator (uncredited) en la película.
Roger Moore interpreta a Orderly (uncredited) en la película.
Philip Morris interpreta a Fisherman (uncredited) en la película.
Forbes Murray hace el papel de Naval Aide (uncredited).
Frank Orth interpreta a Old Sailor in Bilge Area (uncredited) en la película.
Syd Saylor interpreta a Wireless Operator Sending Coded Message (uncredited) en la película.
Harold Schlickenmayer interpreta a Engineer (uncredited) en la película.
Ferdinand Schumann-Heink interpreta a German Operator (uncredited) en la película.
Hans Schumm interpreta a German Sailor Looking for Wireless (uncredited) en la película.
Harry Semels interpreta a Cook on Tugboat (uncredited) en la película.
Lee Shumway interpreta a Sailor (uncredited) en la película.
Robert R. Stephenson hace el papel de German Sailor (uncredited).
Harry Strang interpreta a Shore Patrol Sailor (uncredited) en la película.
Walter Thiele interpreta a Young German Sailor (uncredited) en la película.
Emmett Vogan hace el papel de Junior Officer Standing by Map (uncredited).
Hans von Morhart interpreta a German Sailor (uncredited) en la película.
Doodles Weaver hace el papel de Sailor (uncredited).
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