| Year | 1990 |
| Date | 02-Mar |
| Volume | 164 |
| Issue | 3,868 |
| Page | 286 |
| Category | Nautical |
| Part | 4 |
| Title | Borderer. A twin cylinder marine steam engine design suitable for 1/2 in. to 5/8 in. Bore and Stroke |
| Author | John P.Bertinat |
| Notes | Alternative mild steel bedplate, the cast base, engine columns, the bearing housings |