Three irresponsible teenagers borrow a yacht belonging to the local Sea Scouts and run out of fuel. They hoist the sail in an endeavour to stop the boat drifting on to the notoriously dangerous Bradda Head, but find themselves in even greater trouble in the shape of a sea-mine.
| Actor | Role |
|---|---|
 Ian GibsonNot listed | Not listed |
| VVeronica PurcellNot listed | Not listed |
 Bernard LeeNot listed | Not listed |
 Sydney TaflerNot listed | Not listed |
 Nicholas ParsonsNot listed | Not listed |
 Hattie JacquesNot listed | Not listed |