- Louis Adlon - German Ensign (uncredited)
- Iris Adrian - Jenny O'Hara (uncredited)
- Frank Alten - German (uncredited)
- Kirk Alyn - Brazilian Gun Captain (uncredited)
- C.E. Anderson - Bearded Lieutenant Commander (uncredited)
- Tod Andrews - Ahearn (uncredited)
- Warren Ashe - U.S. Sailor (uncredited)
- Hooper Atchley - Lieutenant-Commander (uncredited)
- Irving Bacon - Bartender (uncredited)
- Leah Baird - Mother (uncredited)
- Joseph E. Bernard - Ed (uncredited)
- Monte Blue - Seaman (uncredited)
- Stanley Blystone - U.S. Commander (uncredited)
- Sven Hugo Borg - Norwegian Seaman (uncredited)
- Chick Chandler - Goldberg (uncredited)
- Eddy Chandler - Seaman (uncredited)
- Alec Craig - McGonigle (uncredited)
- Hal Craig - Ship Officer (uncredited)
- George Davis - German Sailor (uncredited)
- Jean Del Val - Capt. La Pricor (uncredited)
- Donald Douglas - Lieutenant-Commander (uncredited)
- Warren Douglas - Navy Pilot (uncredited)
- Arthur Dulac - French Seaman (uncredited)
- Johnny Duncan - Sailor (uncredited)
- Ralph Dunn - Quartermaster (uncredited)
- James Flavin - Merchant Marine School Lieutenant-Commander (uncredited)
- Ross Ford - Ensign Speaker (uncredited)
- William Forrest - Lieutenant-Commander (uncredited)
- Art Foster - Pete Larson (uncredited)
- Eddie Foster - American Seaman (uncredited)
- Arno Frey - German Pilot (uncredited)
- Hans Fuerberg - German Officer (uncredited)
- Frederick Giermann - German Submarine Captain (uncredited)
- Art Gilmore - President Franklin D. Roosevelt (voice) (uncredited)
- Christine Gordon - Murmansk Welcomer (uncredited)
- Kit Guard - Unemployed Seaman (uncredited)
- William Haade - Loudmouth Saloon Patron (uncredited)
- Creighton Hale - Sparks (uncredited)
- Eddie Hall - Casino Club Patron at Loudmouth's Table (uncredited)
- Lew Hicks - Lieutenant-Commander at Meeting (uncredited)
- Stuart Holmes - Lieutenant-Commander at Meeting (uncredited)
- William Hopper - Canadian Soldier (uncredited)
- Ted Jacques - Ship Officer (uncredited)
- Lew Kelly - Tony Gonzales (uncredited)
- Fred Kelsey - Joe (uncredited)
- J.M. Kerrigan - Caviar Jinks (uncredited)
- Victor Kilian Jr. - U.S. Navy Petty Officer (uncredited)
- George Kirby - Pilot Johnson (uncredited)
- Kurt Kreuger - German U-Boat Sailor on Microphone (uncredited)
- Glenn Langan - Gun Crewman (uncredited)
- Manuel López - Mexican Seaman (uncredited)
- Anthony Marsh - English Gun Captain (uncredited)
- Frank Mayo - Major / Seaman (uncredited)
- Clyde McAtee - Lieutenant-Commander at Meeting (uncredited)
- Charles McMurphy - Lieutenant-Commander at Meeting (uncredited)
- Frank Mills - Seaman (uncredited)
- Howard M. Mitchell - Undetermined Secondary Role (uncredited)
- Dennis Moore - Signalman (uncredited)
- Jack Mower - Dispatcher (uncredited)
- Rudolf Myzet - Russian Seaman (uncredited)
- George N. Neise - German Lieutenant (uncredited)
- William H. O'Brien - Lieutenant-Commander at Meeting (uncredited)
- Bob O'Connor - Lieutenant-Commander at Meeting (uncredited)
- Gene O'Donnell - Lieutenant-Commander (uncredited)
- George O'Hanlon - Navy Pilot (uncredited)
- George Offerman, Jr. - Cecil (uncredited)
- Paul Panzer - Seaman (uncredited)
- Lee Phelps - Lieutenant-Commander (uncredited)
- Russ Powell - Slops Denton (uncredited)
- Hugh Prosser - Lieutenant Commander (uncredited)
- Frank Puglia - Capt. Carpolis (uncredited)
- Pedro Regas - Greek Seaman (uncredited)
- Otto Reichow - German Petty Officer (uncredited)
- Grandon Rhodes - Lieutenant Commander (uncredited)
- Vera Richkova - Murmansk Welcomer (uncredited)
- Kane Richmond - Ensign Wright (uncredited)
- Cliff Saum - Seaman (uncredited)
- Syd Saylor - Jim (uncredited)
- Ferdinand Schumann-Heink - German (uncredited)
- Hans Schumm - Lieutenant Commander (uncredited)
- Harry Seymour - Pianist (uncredited)
- George Sherwood - German (uncredited)
- Walter Soderling - Pop (uncredited)
- George Sorel - German Bombardier (uncredited)
- Glenn Strange - Jake (uncredited)
- Ludwig Stössel - Capt. Ziemer (uncredited)
- Leo Sulky - Unemployed Seaman (uncredited)
- Charles Sullivan - Seaman (uncredited)
- Elliott Sullivan - Hennessy (uncredited)
- Sigfrid Tor - Helmsman (uncredited)
- Charles Trowbridge - Rear Adm. Hartridge (uncredited)
- Peter van Eyck - German Ensign (uncredited)
- Roland Varno - Gunnery Captain (uncredited)
- Wilhelm von Brincken - German Submarine Captain (uncredited)
- Hans von Morhart - German (uncredited)
- Minor Watson - Rear Adm. Williams (uncredited)
- Dick Wessel - Cherub Joe (uncredited)
- John Whitney - U.S. Sailor (uncredited)
- Dave Willock - Convoy Speaker (uncredited)
- Tom Wilson - Bar Patron (uncredited)
- Eric Wilton - Lieutenant-Commander at Meeting (uncredited)
- Jack Wise - Dispatcher (uncredited)
- Charles Flynn - German (uncredited)
- Lloyd Bacon
- John Howard Lawson
- Jack L. Warner
- Jerry Wald
- Adolph Deutsch
Humphrey Bogart hace el papel de Lt. Joe Rossi.
Raymond Massey interpreta a Capt. Steve Jarvis en la película.
Alan Hale interpreta a Boats O'Hara en la película.
Julie Bishop hace el papel de Pearl O'Neill.
Ruth Gordon hace el papel de Mrs. Sarah Jarvis.
Sam Levene interpreta a Abel 'Chips' Abrams en la película.
Dane Clark hace el papel de Johnnie Pulaski.
Peter Whitney interpreta a Whitey Lara en la película.
Dick Hogan hace el papel de Cadet Robert Parker.
Louis Adlon interpreta a German Ensign (uncredited) en la película.
Iris Adrian hace el papel de Jenny O'Hara (uncredited).
Frank Alten interpreta a German (uncredited) en la película.
Kirk Alyn interpreta a Brazilian Gun Captain (uncredited) en la película.
C.E. Anderson interpreta a Bearded Lieutenant Commander (uncredited) en la película.
Tod Andrews interpreta a Ahearn (uncredited) en la película.
Louis V. Arco interpreta a Submarine Commander (uncredited) en la película.
Warren Ashe hace el papel de U.S. Sailor (uncredited).
Hooper Atchley interpreta a Lieutenant-Commander (uncredited) en la película.
Irving Bacon interpreta a Bartender (uncredited) en la película.
Leah Baird hace el papel de Mother (uncredited).
Joseph E. Bernard hace el papel de Ed (uncredited).
Monte Blue interpreta a Seaman (uncredited) en la película.
Stanley Blystone hace el papel de U.S. Commander (uncredited).
Sven Hugo Borg interpreta a Norwegian Seaman (uncredited) en la película.
Chick Chandler hace el papel de Goldberg (uncredited).
Eddy Chandler hace el papel de Seaman (uncredited).
Alex Chivra interpreta a Lieutenant-Commander at Meeting (uncredited) en la película.
Eddie Coke interpreta a Signal Man (uncredited) en la película.
Alec Craig interpreta a McGonigle (uncredited) en la película.
Hal Craig hace el papel de Ship Officer (uncredited).
Albert D'Arno interpreta a German Sailor (uncredited) en la película.
George Davis hace el papel de German Sailor (uncredited).
Jean Del Val interpreta a Capt. La Pricor (uncredited) en la película.
Janna DeLoos hace el papel de Murmansk Welcomer (uncredited).
Eddie Dew hace el papel de Lieutenant-Commander at Meeting (uncredited).
Donald Douglas interpreta a Lieutenant-Commander (uncredited) en la película.
Warren Douglas interpreta a Navy Pilot (uncredited) en la película.
Arthur Dulac interpreta a French Seaman (uncredited) en la película.
Johnny Duncan hace el papel de Sailor (uncredited).
Ralph Dunn interpreta a Quartermaster (uncredited) en la película.
Carl Ekberg interpreta a Dutch Seaman (uncredited) en la película.
John Epper interpreta a German Lieutenant-Commander (uncredited) en la película.
James Flavin interpreta a Merchant Marine School Lieutenant-Commander (uncredited) en la película.
Ross Ford interpreta a Ensign Speaker (uncredited) en la película.
William Forrest interpreta a Lieutenant-Commander (uncredited) en la película.
Art Foster hace el papel de Pete Larson (uncredited).
Eddie Foster hace el papel de American Seaman (uncredited).
Arno Frey interpreta a German Pilot (uncredited) en la película.
Hans Fuerberg interpreta a German Officer (uncredited) en la película.
Frederick Giermann interpreta a German Submarine Captain (uncredited) en la película.
Art Gilmore interpreta a President Franklin D. Roosevelt (voice) (uncredited) en la película.
Christine Gordon interpreta a Murmansk Welcomer (uncredited) en la película.
Kit Guard interpreta a Unemployed Seaman (uncredited) en la película.
Henry Guttman hace el papel de Nazi Submarine Officer (uncredited).
William Haade hace el papel de Loudmouth Saloon Patron (uncredited).
Creighton Hale interpreta a Sparks (uncredited) en la película.
Eddie Hall hace el papel de Casino Club Patron at Loudmouth's Table (uncredited).
Ernst Hauessermann interpreta a German (uncredited) en la película.
Lew Hicks interpreta a Lieutenant-Commander at Meeting (uncredited) en la película.
Stuart Holmes interpreta a Lieutenant-Commander at Meeting (uncredited) en la película.
William Hopper hace el papel de Canadian Soldier (uncredited).
Ted Jacques interpreta a Ship Officer (uncredited) en la película.
Lew Kelly interpreta a Tony Gonzales (uncredited) en la película.
Fred Kelsey interpreta a Joe (uncredited) en la película.
J.M. Kerrigan interpreta a Caviar Jinks (uncredited) en la película.
Victor Kilian Jr. interpreta a U.S. Navy Petty Officer (uncredited) en la película.
George Kirby interpreta a Pilot Johnson (uncredited) en la película.
Kurt Kreuger hace el papel de German U-Boat Sailor on Microphone (uncredited).
Glenn Langan hace el papel de Gun Crewman (uncredited).
Rolf Lindau hace el papel de Submarine Radio Operator (uncredited).
Manuel López hace el papel de Mexican Seaman (uncredited).
Anthony Marsh interpreta a English Gun Captain (uncredited) en la película.
Frank Mayo interpreta a Major / Seaman (uncredited) en la película.
Clyde McAtee hace el papel de Lieutenant-Commander at Meeting (uncredited).
Charles McMurphy interpreta a Lieutenant-Commander at Meeting (uncredited) en la película.
Edwin Mills hace el papel de Naval Radio Operator (uncredited).
Frank Mills interpreta a Seaman (uncredited) en la película.
Howard M. Mitchell hace el papel de Undetermined Secondary Role (uncredited).
Dennis Moore hace el papel de Signalman (uncredited).
Jack Mower interpreta a Dispatcher (uncredited) en la película.
Rudolf Myzet interpreta a Russian Seaman (uncredited) en la película.
George N. Neise interpreta a German Lieutenant (uncredited) en la película.
Kurt Neumann hace el papel de German (uncredited).
William H. O'Brien hace el papel de Lieutenant-Commander at Meeting (uncredited).
Bob O'Connor hace el papel de Lieutenant-Commander at Meeting (uncredited).
Gene O'Donnell interpreta a Lieutenant-Commander (uncredited) en la película.
George O'Hanlon hace el papel de Navy Pilot (uncredited).
George Offerman, Jr. interpreta a Cecil (uncredited) en la película.
Paul Panzer interpreta a Seaman (uncredited) en la película.
Lee Phelps interpreta a Lieutenant-Commander (uncredited) en la película.
Joe Ploski hace el papel de German Sailor (uncredited).
Russ Powell interpreta a Slops Denton (uncredited) en la película.
Hugh Prosser interpreta a Lieutenant Commander (uncredited) en la película.
Frank Puglia interpreta a Capt. Carpolis (uncredited) en la película.
Pedro Regas interpreta a Greek Seaman (uncredited) en la película.
Otto Reichow hace el papel de German Petty Officer (uncredited).
Grandon Rhodes interpreta a Lieutenant Commander (uncredited) en la película.
Vera Richkova interpreta a Murmansk Welcomer (uncredited) en la película.
Kane Richmond interpreta a Ensign Wright (uncredited) en la película.
Walter Rode hace el papel de Russian Air Force Captain (uncredited).
Cliff Saum interpreta a Seaman (uncredited) en la película.
Syd Saylor interpreta a Jim (uncredited) en la película.
Ferdinand Schumann-Heink hace el papel de German (uncredited).
Hans Schumm interpreta a Lieutenant Commander (uncredited) en la película.
Harry Seymour interpreta a Pianist (uncredited) en la película.
George Sherwood interpreta a German (uncredited) en la película.
Walter Soderling hace el papel de Pop (uncredited).
George Sorel interpreta a German Bombardier (uncredited) en la película.
Glenn Strange hace el papel de Jake (uncredited).
Ludwig Stössel interpreta a Capt. Ziemer (uncredited) en la película.
Leo Sulky hace el papel de Unemployed Seaman (uncredited).
Charles Sullivan interpreta a Seaman (uncredited) en la película.
Elliott Sullivan hace el papel de Hennessy (uncredited).
Walter Thiele hace el papel de German (uncredited).
Sigfrid Tor interpreta a Helmsman (uncredited) en la película.
Charles Trowbridge interpreta a Rear Adm. Hartridge (uncredited) en la película.
Peter van Eyck interpreta a German Ensign (uncredited) en la película.
Roland Varno interpreta a Gunnery Captain (uncredited) en la película.
Wilhelm von Brincken interpreta a German Submarine Captain (uncredited) en la película.
Hans von Morhart interpreta a German (uncredited) en la película.
Minor Watson interpreta a Rear Adm. Williams (uncredited) en la película.
Dick Wessel hace el papel de Cherub Joe (uncredited).
John Whitney interpreta a U.S. Sailor (uncredited) en la película.
Dave Willock interpreta a Convoy Speaker (uncredited) en la película.
Tom Wilson interpreta a Bar Patron (uncredited) en la película.
Eric Wilton interpreta a Lieutenant-Commander at Meeting (uncredited) en la película.
Al Winters hace el papel de German Lieutenant (uncredited).
Jack Wise interpreta a Dispatcher (uncredited) en la película.
Richard Woodruff interpreta a Squadron Leader (uncredited) en la película.
Jack Young hace el papel de President Franklin D. Roosevelt (voice) (uncredited).
Charles Flynn interpreta a German (uncredited) en la película.
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