I have written quite a bit about sailor’s motorboats and as part of that project we analyzed a very interesting boat in-build in New Zealand. That boat, the Artnautica 58, has now been launched and is in the middle of sea-trials with encouraging results.
It’s too early in the testing process to draw firm conclusions, particularly since the interior is not complete so she is light, but four impressive things jump out at me from the initial numbers the designer sent me:
- Top speed is over 11 knots on just 75 horsepower.
- Fuel burn at 9 knots equates to just .88 litres for each nautical mile or a bit better than 4 miles to the US gallon. Contrast that with the average recreational trawler of similar interior volume that has hell to make 6 knots at that fuel burn.
- Drop the speed to a bit over 7 knots and fuel burn drops to .66 litres for each nautical mile or 7 miles to the US gallon—a number that will make the boat not only far more economical than any recreational trawler out there, but also cheaper to own than just about any offshore sailboat of the same volume.
- As the graph below shows, there is no sudden step up in fuel burn, or to put it another way, the boat is not restricted by a hull speed number, at least at these speed to length ratios.
A second hull is already in-build, a development that makes us rather chuffed since the designer tells us that the owner of that boat was inspired to buy by reading about the design here at AAC—glad we could help with what we think is a great project.
All we need now is sane fuel pricing. With oil prices heading down this would be a great time to add a revenue neutral carbon tax for countries that don’t already have one, which would in turn lead to boats like the Artnautica 58 becoming the norm and replacing environmental disasters like this:
And here’s a video that shows how little fuss the boat makes when going through the water at 9 knots: Click Here to View
We have not received any benefit in money or in kind from the designer or builder of the Artnautica 58.