| Year | 1986 |
| Date | 19-Dec |
| Volume | 157 |
| Issue | 3,791 |
| Page | 680 |
| Category | Nautical |
| Part | 17 |
| Title | A Marine Triple Expansion Engine. The O.B.Bolton design |
| Author | J.P.Bertinat |
| Notes | Main steam stop valve, cylinder relief valves, cylinder drain valves, feed pump pipework and fittings, cylinder lubrication, bearing lubrication |