| Year | 1985 |
| Date | 20-Sep |
| Volume | 155 |
| Issue | 3,761 |
| Page | 311 |
| Category | Nautical |
| Part | 2 |
| Title | A Marine Triple Expansion Engine. The O.B.Bolton design |
| Author | J.P.Bertinat |
| Notes | L.P./I.P. cylinder block, high pressure cylinder block, low pressure and high pressure valve chests, intermediate pressure valve chest |