| Name | Character | Episodes |
|---|---|---|
| Dick Sargent | Lt. Maxwell Trotter | 30 |
| Edward Andrews | Cmdr. Roger Adrian | 30 |
| Sheila James Kuehl | Selma Kowalski | 30 |
| Kathleen Nolan | Lt. Anne Morgan | 30 |
| Willis Bouchey | Adm. Bradford | 2 |
| Robert Pine | Orderly | 1 |
| John Fiedler | The Yardbird | 1 |
| Don 'Red' Barry | Colonel Stark | 1 |
| Lloyd Kino | The Junior Officer | 1 |
| Lloyd Kino | The Japanese Commander | 1 |
| Mako | Captain Osato | 1 |
| Mako | The Japanese Commander | 1 |
| Read Morgan | Brian 'Red' Finley | 1 |
| Paul Bryar | Admiral Whitehead | 1 |
| Jerry Douglas | Seaman Curly Smith | 1 |
| Thomas Bellin | The 1st Yeoman | 1 |
| Virginia Christine | Wave Commander Peabody | 1 |
| Tony Frank | The 2nd Yeoman | 1 |
| Louis Quinn | The Radar Operator | 1 |
| Joseph Mell | The Sailor | 1 |
| Raymond Mayo | The Shore Patrolman | 1 |
| Steve London | The Marine Sergeant | 1 |