Skin-on-frame technology lends itself to the construction of many different styles of boats that may or may not have been built this way traditionally. Sizes up to 30 feet are certainly achievable but whether or not it is a good idea is open for debate. Kayaks, Umiaks, Coracles and Curraghs are boats that were designed using skin-on-frame technology from the onset. But in practice, any hull without hollow lines can be built. Dories, sailing Proas, open canoes, and Adirondacks guide boats have been built successfully with minor modifications. The only thing to keep in mind is that a boat with moderate draft would require its bottom to be flattened somewhat to account for the boat’s lighter weight. Otherwise the lighter hull will float higher and the waterline beam will narrow which may result in unacceptable loss of stability. There are pictures out there of skin-on-frame boats where the passengers have to lie down in the boat presumably for stability reason. If you already made the faux pas, a little bit of ballast in the bottom so the boat floats more to its designed water line would make the boat usable again. One could also try to lower the seats a few inches to see if stability improves.
Sorry for drifting off subject. What boat should you build? Personally, I think the smallest boat that will serve your purpose is the best boat for you. A small boat is cheap to build easy to store and can be built just about anywhere. The short building time will not tax your attention span adversely. The biggest boat you can build depends on your area available as shipyard, the time available for the project and your actual need. Do you really want to be rowing a 28foot, 350 pounds Umiak by yourself?
I think a solo canoe along the lines of the legendary WeeLassie would suit most people as a first boat. At less than 12feet, it is easy to live with. At 20 pounds it is easy to stroll to the water’s edge with the boat on your shoulder. It can take you on extraordinary adventures and a child can manage it. I will probably be building one of these this very winter.
Right after I finish my current 14foot Swampscott dory that will be our family adventure boat for summer 2009. Stay tuned for picture of the dory project….
Canadian canoes, pulling boats, catamarans, surfing kayaks, Melonseed skiffs, Peapods, and Prams are all technically possible. They can all be built cheaply, and quickly.
Everyone should have a boat!
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