Arne Kverneland wrote:
I’ve been thinking along similar lines as David does above, and I find it very hard to design a boat that fits within Annie’s specs. Shallow draught and offshore weatherlyness is not that easy to combine.
One spec. that I have added myself is that the boat must be easy to build and to fit the interior into. I therefore focus on a single chine (plywood) boat with flat bottom.
Within the 24”/61cm draught limit, I think it is possible to fit a stub ballast keel, either one central one or twin stubs to stand upright on. It could be smarter to use one stub as this would give better access to one bottom side (at the time) for scrubbing.
One specification I would most certainly break is the 26’/8m LOA limit. I would rather focus on the displacement of 3000kg. With some overhangs the LOA would be better at 8.5 - 9m. Spreading the 3 tons over a bit longer waterline (around 7m) can be done with straighter and less complicated hull lines. A 9m boat at 3 tons will be faster than an 8m boat with the same sail area or engine power, and it will be easier to build.
Then there is the request for a quiet-at-anchor bow, quite important on a floating home. This could well be the showstopper for the sampan type I have in mind. Therefore, I’d better shut up. I should rather build a big (5.5 - 6m / 250 - 300kg) scow/sampan type daysailer for myself first, before suggesting the type to others.
Arne.
PS: Annie, just for the record, is the 3000kg displacement the dry or loaded weight?