I don't know what this fact might mean in the conversation about controlled self capsizing, but we've only recently discovered that the low-cost polyethylene laminate (polytarp) sails that we've been making and selling to DIY builders for the last 18 years are only 90% the density of water as opposed to Dacron sails which are between 130 and 140% as dense as water. For most small wooden mono-hull craft, at least, having a sail that floats can make a significant difference in whether the craft turtles or not. However, we have yet to do capsize tests on craft longer than 16.' I suspect we would soon find out if the scow built by the Crystal River Boat Builders ever went over. That boat weighs roughly 10,000 lb., is 36' long, 12+' wide, and is powered by a 507 sq. ft. PolySail gaff main and a 135 sq. ft. PolySail jib. She recently did 8 knots on a return trip from Cedar Key. Crystal River Boat Builders sailing the scow "Spirit". I think that they have additional video of that ocean voyage on Facebook or youtube if members might be interested.
Posted by: polysail@polysail.com
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