The son of a deceased Coast Guard hero is raised by a Coast Guard NCO, who also has a son the same age. When they get older both are accepted into the Coast Guard Academy, but the hero's son winds up being thrown out, bringing disgrace to his adopted family.
| Actor | Role |
|---|---|
 John DerekG.R. 'Grad' Matthews | G.R. 'Grad' Matthews |
 Wanda HendrixPat Kirby | Pat Kirby |
 Walter BrennanC.P.O 'Chief' O'Malley | C.P.O 'Chief' O'Malley |
 Richard JaeckelEnsign H.G. 'Hap' O'Malley | Ensign H.G. 'Hap' O'Malley |
 Tom TullyIce Patrol Capt. Holland | Ice Patrol Capt. Holland |
 Barton MacLaneCapt. Jack Matthews | Capt. Jack Matthews |
 Erin O'Brien-MooreMrs. Nora O'Malley | Mrs. Nora O'Malley |
 Darryl HickmanSenior Cadet Pete Bennett | Senior Cadet Pete Bennett |
 Roy RobertsCaptain of the 'Eagle' | Captain of the 'Eagle' |
 Ben Cooper3rd Plane Crewman | 3rd Plane Crewman |
 Steve BrodieLt. Rogers | Lt. Rogers |
 Douglas KennedyHelicopter Pilot | Helicopter Pilot |