| Year | 1939 |
| Date | 11-May |
| Volume | 80 |
| Issue | 1,983 |
| Page | 555 |
| Category | Nautical |
| Part | |
| Title | "Sea Devils" |
| Author | Edgar T.Westbury |
| Notes | Further details of a model speed boat engine. The components, valve gear, elevation of engine, composite timing diagram, steam and exhaust valves, another view, water feed pump, pumps |