Trailer
Images
 | Cliff Robertson as Lt. John F, Kennedy |
 | Ty Hardin as Ensign Leonard J. Thom |
 | James Gregory as Commander C.R. Ritchie |
 | Robert Culp as Ensign George 'Barney' Ross |
 | Grant Williams as Lt. Alvin Cluster |
 | Lew Gallo as Yeoman Rogers |
 | Errol John as Benjamin Kevu |
 | Michael Pate as Lt. Reginald Evans |
 | Robert Blake as Charles 'Bucky' Harris |
 | Biff Elliot as Edgar E. Mauer |
 | Norman Fell as Edmund Drewitch |
 | James McCallion as Pat McMahon |
 | Joseph Gallison as Harold Mamey |
 | William Douglas as Gerald Zinser |
 | Sam Gilman as Raymond Starkey |
| Clyde Howdy as Leon Drawdy |
 | Buzz Martin as Maurice Kowal |
| Sam Reese as Andrew Kirksey |
| Glenn Sipes as William Johnson |
 | John Ward as John Maguire |
| David Whorf as Raymond Albert |
 | George Takei as Helmsman on Japanese Destroyer (uncredited) |
 | Andrew Duggan as Narrator (uncredited) |
 | Roger Davis as Radioman (uncredited) |
| Jerry Earle Kraft as Extra (uncredited) |
 | George Gaynes as PT Flotilla Captain (uncredited) |
 | Chuck Hicks as Cook (uncredited) |
 | Dale Ishimoto as Commander (uncredited) |
| Barney Ross as Chief Benson (uncredited) |
 | Sheb Wooley as Edmund Drewitch's Scream (archive sound) (uncredited) |
| Directing | |
| Leslie H. Martinson | Director |
Writing | |
| Richard L. Breen | Screenplay |
| Howard Sheehan | Adaptation |
| Vincent X. Flaherty | Adaptation |
| Robert J. Donovan | Novel |
Crew | |
| Bob Herron | Stunts |
Costume & Make-Up | |
| Gordon Bau | Makeup Supervisor |
Crew | |
| Chuck Hicks | Stunts |
| Dean Smith | Stunts |
| Paul Baxley | Stunts |
Directing | |
| C.M. Florance | Assistant Director |
Production | |
| Bryan Foy | Producer |
Sound | |
| David Buttolph | Original Music Composer |
| William Lava | Original Music Composer |
Camera | |
| Robert Surtees | Director of Photography |
Editing | |
| Folmar Blangsted | Editor |
Art | |
| Leo K. Kuter | Art Direction |
| John P. Austin | Set Decoration |
