![]() ![]() Some may look a bit like that until you get a whiff of the price tag or some other hidden problem. I don't believe in "no compromise" boats. For example, the fancy runabouts featured in a recent Woodenboat magazine.Īnyway, that is the goal I set and it has been achieved. If you look around, there are some who claim that but when you look at the photos of them running at low speed, they still look bow high with the forward view restricted. The definition of "planing" tends to get argumentative but I will settle for a hull that will run level, economically and comfortably at any speed from the top end down to about 10kts. The other avenue has been virtually unexplored in over 50 years since engines became more powerful and lighter. The weight and economy of the semi-displacement hull made that choice less attractive to me. A semi-displacement hull or try to slow down a planing hull. There are only two ways to get this speed in a monohull. I tended to get bored running up and down the ditch and rivers at 6kts for very long. That is, the ability to cruise economically in the ICW at double sailboat speed. You hit on the original goal for my little cruiser. Is it to used commercially (diesel's will tend to live longer and MAY use less fuel, but will have longer down time as they can't simply be "swapped" over).Īs far as LCG goes, this can be taken care of with the location of other onboard weights. Is the boat to be home-built, for instance ( installation is much easier with o/b's ). (It's this kind of hullform I would propose for options 1 & 4 of our poll).įurther, there's a lot more that needs to be considered in choosing the powerplant. This way, a planing hull - which, when required can still go faster - will not be loading up its powerplant whilst running at the speeds usually associated with "climbing the hump". The solution, I think, is to use a hullform which remains essentially on plane down to quite low speeds - say 12 - 13k. Heavily loaded outboards, or propped down so as to run around 4000 rpm but at semi-displacement speeds, will have the ability to use a fair bit of fuel. Outboards usually come into their own once a boat is up on plane and able to run freely. However, Gary has put a cat among the pigeons a little by posing the question in regards to a semi-displacement hullform. ![]() ![]() Those who follow these forums will have a pretty good idea of where I stand here - The pros of outboards generally outweigh the alternatives. ![]()
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