 John WayneLt. Cmdr. Wedge Donovan | Lt. Cmdr. Wedge Donovan |
 Susan HaywardConstance Chesley | Constance Chesley |
 Dennis O'KeefeLt. Cmdr. Robert Yarrow | Lt. Cmdr. Robert Yarrow |
 William FrawleyEddie Powers | Eddie Powers |
 Leonid KinskeyJohnny Novasky | Johnny Novasky |
 J.M. KerriganSawyer Collins | Sawyer Collins |
 Grant WithersWhanger Spreckles | Whanger Spreckles |
 Paul FixDing Jacobs | Ding Jacobs |
 Ben WeldenYump Lumkin | Yump Lumkin |
 William ForrestLt. Tom Kerrick | Lt. Tom Kerrick |
 Addison RichardsCapt. Joyce | Capt. Joyce |
| JJay NorrisJoe Brick | Joe Brick |
 Duncan RenaldoConstruction Worker at Party | Construction Worker at Party |
| AAbdullah AbbasConstruction Worker (uncredited) | Construction Worker (uncredited) |
| LLee AdamsConstruction Worker (uncredited) | Construction Worker (uncredited) |
| JJoel AllenCoxswain (uncredited) | Coxswain (uncredited) |
 Roy BarcroftSeabee Barcroft (uncredited) | Seabee Barcroft (uncredited) |
| RRoy BrentConstruction Worker (uncredited) | Construction Worker (uncredited) |
 Joe BrooksPilot (uncredited) | Pilot (uncredited) |
 Charles D. BrownCapt. Squires (uncredited) | Capt. Squires (uncredited) |
| GGeorge BruggemanSeabee (uncredited) | Seabee (uncredited) |
 Wheaton ChambersNavy Observer (uncredited) | Navy Observer (uncredited) |
| RRoy DarmourOfficer (uncredited) | Officer (uncredited) |
 Kenne DuncanConstruction Worker (uncredited) | Construction Worker (uncredited) |
 Jean FenwickCapt. Joyce's Secretary (uncredited) | Capt. Joyce's Secretary (uncredited) |
 Terry FrostOrderly (uncredited) | Orderly (uncredited) |
| GGene GaryFrench Construction Worker (uncredited) | French Construction Worker (uncredited) |
 Bud GearyConstruction Worker (uncredited) | Construction Worker (uncredited) |
| EErnest GolmVan Pelt (uncredited) | Van Pelt (uncredited) |
 Kit GuardConstruction Worker in Shelter (uncredited) | Construction Worker in Shelter (uncredited) |
