Hullform 9P is freeware Hull Design Software. It now appears to work on Windows 10 though it had problems for several years before. It is a full Professional Level Hull Design Package, but a bit simpler than many current programs.
COVID doesn’t need to end fun things. What simple boats could be built at home during quarantine and social distancing. Here are mine.
Things to do while home isolation and social distancing are the norm
Teo’s Weekly Video series building a plywood sailing dinghy – the performance oriented Goat Island Skiff. Domonstration of building methods. He is currently up to week 18 (March 2020)
Just a little video showing that the Viola 14 Sailing Canoe has enough stability to stand and hoist the sail or raise or lower the mast while one the water.
Videos of best speed upwind in the Oz Goose to handle large waves – a video of depowering a lug by reducing the downhaul tension slightly.
Replace yard on a lug mainsail with a carbon windsurf mast. Replacing a standard wooden yard for the top of the balance lug sail on The Goat Island Skiff with a piece cut from a windsurfer mast.
Some of the decisions that have to be made before ordering Goat Island Skiff or other lugsails.
Question was how to stop a freestanding mast from falling out on a small sailboat? A few simple fittings and a neat solution
One recurring problem with plywood foils, centreboards, leeboards and rudders is that over time they tend to break unexpectedly.
Make excellent and accurate foils (centreboard, leeboard, keel or rudder blade) adding way more performance for not much effort and no cost – series
Controlling sail twist on any boat is critical for performance. Here we describe two methods for getting more performance all round and safer handling downwind.
They get put in our 2020 Calendar for the GIS facebook group – just click “Like” or “Star” for the photos you like most.
It is not difficult to build a hydrofoil stabilised dinghy – Also a model for information sharing so everyone is not always reinventing the wheel
Hydrofoil sailing is possible for homebuilt boats. It can be used to reduce heeling so the crew doesn’t have to work so hard.
Read Jenő’s experience with the Viola 14 sailing canoe which is Michael Storer’s latest design – the second and the third boats were built in Hungary by two members of the Hungarian Amateur Boatbuilding community (hajoepitok.hu).
Early design work. Ketch and Yawl version Norwalk Island Sharpie 18ft. Prompted by development of mast tabernacles and folded mast overhang
Editorial and Article praising the simplicity and performance of the Goat Island Skiff in “Le Chasse-Marée” magazine this month – France’s premier traditional and wooden boat magazine.
How to get power from the sail quickly and simply in this lesson works on your direct feeling of power and acceleration. Yes! you can FEEL it
Tacking and Gybing can be simplified by prioritising the right parts. More security by delaying swapping hands until the boat is going again for smooth boat handling