| Year | 1989 |
| Date | 01-Dec |
| Volume | 163 |
| Issue | 3,862 |
| Page | 698 |
| Category | Nautical |
| Part | 1 |
| 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 | Birth of the design, the cylinder block, boring Borderer's cylinders |