• 
  Lloyd Bacon

  regizor

• 
  W.R. Burnett

  scenarist

• 
  Humphrey Bogart

  Joe Rossi
• 
  Raymond Massey

  Steve Jarvis
• 
  Alan Hale

  Boats O'Hara
• 
  J.M. Kerrigan

  Caviar Jinks
• 
  Joseph E. Bernard

  Ed
• 
  William H. O'Brien

  Lt. Commander at Meeting

• 
  Frank Mills

  Seaman
• 
  Lew Kelly

  Tony Gonzales
• 
  Hooper Atchley

  Lieutenant-Commander
• 
  Glenn Langan

  Gun Crewman
• 
  Cliff Saum

  Seaman
• 
  James Flavin

  Lieutenant-Commander of Merchant Marine School
• 
  Russ Powell

  'Slops' Denton

• 
  William Hopper

  Canadian Soldier
• 
  Frank Puglia

  Captain Carpolis
• 
  Irving Bacon

  Barman
• 
  Virginia Christine

  Pebbles
• 
  Grandon Rhodes

  Lieutenant Commander
• 
  Dave Willock

  Ensign - Convoy Speaker
• 
  Frank Mayo

  Major/Seaman
• 
  George Kirby

  Pilot Johnson
• 
  Alec Craig

  McGonigle
• 
  Kurt Kreuger

  German U-Boat Sailor on microphone
• 
  Hans Schumm

  Lieutenant Commander
• 
  Fred Kelsey

  Joe
• 
  Peter van Eyck

  German Ensign
• 
  Lee Phelps

  Lieutenant-Commander
• 
  Ruth Gordon

  Mrs. Sarah Jarvis
• 
  Creighton Hale

  Sparks
• 
  Kit Guard

  Unemployed Seaman
• 
  William Haade

  Loudmouth Saloon Customer
• 
  Stuart Holmes

  Lt. Commander at Meeting
• 
  Dennis Moore

  Signal Man
• 
  Pedro Regas

  Greek Seaman
• 
  Ray Montgomery

  Aherne (replaced by Tod Andrews)
• 
  Donald Douglas

  Lieutenant-Commander
• 
  Julie Bishop

  Pearl O'Neill
• 
  Eddy Chandler

  Seaman
• 
  Monte Blue

  Seaman
• 
  Eric Wilton

  Lt. Commander at Meeting
• 
  Charles Trowbridge

  Rear Admiral Hartridge
• 
  Stanley Blystone

  U.S. Commander
• 
  Sam Levene

  Abel 'Chips' Abrams
• 
  Dane Clark

  Johnnie Pulaski
• 
  Dick Hogan

  Cadet Ezra Parker
• 
  Raymond Massey

  Capt. Steve Jarvis
• 
  Peter Whitney

  Whitey Lara