- Robert Montgomery
- Lieut. Thomas Knowlton USN
- Walter Huston
- Lieut. Comdr. T.J. Toler USN
- Madge Evans
- Joan Standish
- Jimmy Durante
- 'Ptomaine' - Ships Cook
- Eugene Pallette
- Mac Dougal - Chief Torpedo Man
- Robert Young
- Lieut. (JG) 'Brick' Walters
- Edwin Styles
- Herbert Standish - Flight Comdr.
- John Lee Mahin
- Lieut. (JG) 'Speed' Nelson
- David Newell
- Lieut. (JG) Radford
- Sterling Holloway
- Seaman Jenks
- Charles Irwin
- Buck Teeth British Sergeant
- Robert Adair
- British Officer
- Jack Baxley
- Kangaroo Boxing Match Manager
- Gino Corrado
- Bit
- Anna Demetrio
- Fat Italian Dancing Partner
- James Donlan
- Seaman Muller
- Maude Eburne
- Lady Higby
- Herbert Evans
- British Officer
- Eddie Hart
- Shore Patrolman
- Henry Kolker
- Adm. Sir Hugh Higby
- Babe London
- Fat Girl on Passing Boat
- Frank Marlowe
- Seaman
- Matt McHugh
- Seaman Reporting Chlorine Gas
- Bradley Page
- Seaman Gardner
- James Parrish
- Seaman
- Paul Porcasi
- Italian Admiral
- Nina Quartero
- Nurse
- Syd Saylor
- Chief Engineer Hendrickson
- William Stack
- Naval Doctor
- Harry Strang
- Submarine Crewman
- Charles Sullivan
- Submarine Crewman
- Jack Trent
- Naval Surgeon
- Wilhelm von Brincken
- German Commander
- Hans von Morhart
- German Officer
