A concept for a retiring sailor who wanted a very fuel-efficient power boat and felt no need to travel faster than he did when sailing. At a hull speed of 10 knots, this round-bilged, narrow hull would be very efficient and sea-kindly, needing only a 53 hp (40 kW) diesel to keep it burbling along. A large, slow moving controllable pitch propeller allows the power plant to be fine tuned to conditions, getting the most out of the small engine. Paravanes on outriggers provide roll-damping underway and at anchor.
Particulars
| Overall Length (Hull) | 12.2 m [40’] |
| Waterline Length | 11.9 m [39’] |
| Beam Over All (Hull) | 3.05 m [10’] |
| Draft | 0.88 m [2.9’] |
| Displacement, Lightship | 2,570 kg [5,666 lb] |
| Displacement to DLWL | 5,030 kg [11,089 lb] |
| Water Ballast | 620 kg [1,366 lb] |
| Engine | 39.6 kW [53 hp] |
| Reduction Gear | 3.03:1 |
| Propeller | 738 mm DIA. [29″] CP |
| Cruising Speed | 10 kts |
| Range at Cruising Speed | 1,000 nm |
| Fuel | 567 L [150 gal] |
| Fresh Water | 350 L [92 gal] |
| Sewage | 175 L [46 gal] |