| Year | 1986 |
| Date | 19-Sep |
| Volume | 157 |
| Issue | 3,785 |
| Page | 326 |
| Category | Nautical |
| Part | 14 |
| Title | A Marine Triple Expansion Engine. The O.B.Bolton design |
| Author | J.P.Bertinat |
| Notes | Water pump cylinders, pump plungers, pump crosshead, valve boxes, plugs and unions, air pump check valve, rocking levers, pump and crosshead links |