| Year | 1933 |
| Date | 21-Dec |
| Volume | 69 |
| Issue | 1,702 |
| Page | 596 |
| Category | Model Marine Notes |
| Part | |
| Title | Safety Devices for Model Speed Boats |
| Author | Edgar T.Westbury |
| Notes | Engine switches, overtension switch tripping device fitted in tethering line, simple spring-locked knife switch, the double line, specification of line, ignition switch for deck fitting, other safety measures |