 Tab HunterLt. Morgan Hayes | Lt. Morgan Hayes |
 Frankie AvalonSeaman Joseph Malzone | Seaman Joseph Malzone |
 Scott BradyCapt. Emmett Carey | Capt. Emmett Carey |
 Jim BackusBosun's Mate Ed Fennelly | Bosun's Mate Ed Fennelly |
 Gary CrosbySeaman Floyd Givens | Seaman Floyd Givens |
 Michael DanteLt. William 'Bill' Fourtney | Lt. William 'Bill' Fourtney |
| DDavid LandfieldLt. Jim Cale | Lt. Jim Cale |
 Jody McCreaSeaman William Sherman | Seaman William Sherman |
 Aki AleongSeaman Ronald Davayo | Seaman Ronald Davayo |
 Marc CavellPaul | Paul |
 Eva SixReiko | Reiko |
| DDuane AmentSeaman Kingsley (uncredited) | Seaman Kingsley (uncredited) |
 Richard BakalyanSeaman Hiller (uncredited) | Seaman Hiller (uncredited) |
| JJody DanielsSeaman Jones (uncredited) | Seaman Jones (uncredited) |
| JJoe FinneganSeaman Morris (uncredited) | Seaman Morris (uncredited) |
 Raymond GuthSeaman Rich (uncredited) | Seaman Rich (uncredited) |
 Judy LewisDream Siren (uncredited) | Dream Siren (uncredited) |
| AAlicia LiThird Native Girl (uncredited) | Third Native Girl (uncredited) |
 Steve MitchellSeaman Nolan (uncredited) | Seaman Nolan (uncredited) |
| TTony ScottCPO Perez (uncredited) | CPO Perez (uncredited) |
| VVernon ScottSeaman Fowler (uncredited) | Seaman Fowler (uncredited) |
 William ShatnerNarrator (voice) (uncredited) | Narrator (voice) (uncredited) |
| RRaynum K. TsukamotoKawai (uncredited) | Kawai (uncredited) |
| WWayne WintonSeaman Patterson (uncredited) | Seaman Patterson (uncredited) |
