| Year | 1948 |
| Date | 24-Jun |
| Volume | 98 |
| Issue | 2,457 |
| Page | 673 |
| Category | Nautical |
| Part | |
| Title | A Radio-Controlled Launch |
| Author | R.M.Cooper |
| Notes | Rudder control, speed control servo-mechanism, rudder servo-mechanism, rudder steam servo-mechanism, the total equipment, section through rudder servo steam cock |