:wub: :wub:I you want long range, comfort in a seaway and efficiency:
http://www.nigelirens.com/boats/power-boats/ilan/
Or a bigger version:
http://www.shuttleworthdesign.com/adastra.php
Haha. If the fountain is 800 hp or so at 60 knots on gasoline, that's pretty dead on.
I agree the motion on a powerboat is different than a sailboat. Any long crossing of bluewater, I'd much prefer the slower roll of a sailboat. This boat has a quicker roll period (3-4 sec) than most because of its low CG. On the other hand, she is very stiff, resisting initial roll and motion, especially underway. We crossed many exposed sections of water on the east coast including the Gulf Stream and several of the Great Lakes, and Georgia Strait in the PNW. Like any sensible boater, I picked my weather window carefully and avoided beam seas when I could.
Bieker lists the specs for that design, and my spreadsheet shows about 33hp (at the prop) for 10knots. Hull speed is 8.37, at 22hp. So it takes 11hp to slide up on the bow wave an additional 1.63kn (semi-displacement features). 53hp naturally aspirated Yanmar with a 3:1 gearbox and that huge 29" VP prop. According to Yanmar, that fuel burn is not optimistic. Your mileage may vary, especially if using the Paravanes in rough conditions.
^ This. +1
Its the availablity ...sometimes one hundred miles of coast with no marine fuel docks...jerry jugs and taxi cabs are ok ...but it gets old fast .
The right powerboat for those who already own a Wally, a skerry cruiser, and a wooden twelve.
She definitely looks tender!Modern motorboats with open transoms are very nice to operate.
form and function . Many times a small tender can be carried aft
Our Yacht Club did a cruise around Vancouver Island in 017. At first we had quite a few interested. But then the power boat owners started adding up the fuel costs. 5 sail boats did the trip. No fizz boats. They either; used too much fuel, lacked cruising comforts, rolled like a bastard, had trouble punching in to waces, or all of the above. A Fisher 30 with 45 hp was the fastest under power, and the slowest under sail. The 39 foot long keel sail boat sailed and motored well. The 40 long keel heavy sail boat was a bit slow, both modes. The 32 foot Hunter with the big main and small jib, went okay, both modes. Our Viking was the second fastest under power at around 7.1 in flat water, and the fastest under sail. All told we did 980 NM. Was easy to add up the fuel used. The main tank is 48 liters, which is not much. We carried three 20 liter jugs. We stopped most everywhere and took 2 months. Can be done in a couple of days in a fast fizz boat. But what for. My idea of a power boat, is a bigger engine and trim tabs for the Viking. Might hit 7.5 to 8. But we do that with the sails up. We motor at around 5.75. Sometimes at 3 when the waves and wind and current are against us. Sometimes zero, for a while, until the tide changes. The Viking has a shit hot motion.
They haven't updated their web page to say how fast it will go with twin 370 hp diesels.
Here’s mine. Sailing is somewhat overrated. 
