Traditionally we were all told that chines were draggy, induced vortices and were slow. But in restricted dinghy classes where different hull designs are allowed chines predominate. And now chines are appearing on yachts as well. Sailors seem to be voting with their feet. Is there evidence?
[Translate] A quick jump to the end for those wanting to know the outcome. George’s club yardstick is 1117. That’s the same as an Enterprise or slightly slower than an OK. George is an experienced larger yacht racer and you can see his learning curve in this article. I’m sure there is more to come […]
Joe sent me a question about why his self designed sailing rig for my Electric Quick Canoe design works better if he moves the leeboard forward of the theoretical point for a balanced helm. He has stumbled upon a nice observation of a design element called “lead” (I lead you … not the metal Lead). I explain
There are lots of tips for building and designing boats on the net. “Rules of thumb” are often quoted to help with the calculation of how much sail or how much keel or centreboard area or how big a mast is allowed to be and many other areas. Can a boat be stretched or shrunk or lengthened? But how correct are they? Are they the best guide?
[Translate] Though I am mostly concerned with boats it doesn’t mean I don’t have a strong interest in other fields – specially ones as highly related as aircraft design and performance. I’m just back from the Avalon airshow in Victoria. It’s the biggest airshow in Australia. The highlight for me was watching how all the […]