Shaft driven diesel engines (single draft) E = Estimated
| 56hp | 6-8 knots E |
|---|---|
| 160hp | 16-18 knots E |
| 240hp | 20-22 knots E |
| Twin 125hp | 22-23 knots E |
| Twin D3 | 24-25 knots E |
Designed by Professor Trevor Whittaker FREng F.R.I.N.A & developed by Colin Beattie of Erne Boats Ltd