- Edward G. Robinson
- Captain Bart Manson
- Lynn Bari
- Katherine 'Kathy' Hall
- Victor McLaglen
- First Mate Fred Adamson
- Robert Bailey
- Second Mate Watson
- Marc Lawrence
- Valdez
- E.J. Ballantine
- Silhouette Man
- Mona Maris
- Dolores Garcia
- Tonio Selwart
- Kruger
- Larry Arnold
- Crewman
- Trevor Bardette
- Charlie - Mexican Waiter
- Martin Black
- Steward
- Sammy Blum
- Father Seated at Wedding Reception Table
- Helen Brown
- Mrs. Jim Kelly
- Ralph Byrd
- Quartermaster O'Brien
- Harry Carter
- Navigator
- Martin Cichy
- Crewman
- Ann Corcoran
- Karla
- David Cota
- Motorcycle Messenger
- Victor Cox
- Crewman
- Paul Cristo
- Crewman
- Jean Del Val
- Port Pilot
- Ludwig Donath
- U-Boat Officer
- Carl Ekberg
- Hans Mueller
- Ben Erway
- Dr. Brown
- Arno Frey
- Navigator
- Martin Garralaga
- Able Seaman Serra
- Kit Guard
- Sailor
- Louis Hart
- Crewman
- Peter Helmers
- Captain
- Oscar 'Dutch' Hendrian
- Crewman
- Virgil Johansen
- Naval Seaman
- Harvey Karels
- Minor Role
- Paul Kruger
- Crewman
- Charles Lang
- Naval Gun Crew Officer
- Rolf Lindau
- Radio Operator
- Chris-Pin Martin
- Waiter at Wedding Party
- Margarita MartÃn
- Proprietor
- Antonio Moreno
- Justice of the Peace
- Rudolf Myzet
- Minor Role
- Fred Nurney
- U-Boat Officer
- Daniel Ocko
- Immigration Offical - Board of Inquiry
- Nestor Paiva
- Naval Commander
- Karen Palmer
- Woman
- Grace Poggi
- Nightclub Dancer
- Otto Reichow
- U-Boat Officer
- Roy Roberts
- Crawford
- Constantine Romanoff
- Crewman
- Muni Seroff
- Rodriguez
- George Sorel
- Friendly Stranger
- Juan Varro
- Club Photographer
- Hans von Morhart
- 2nd Officer
