I have posted a sketch to the Files section showing a simple anti
capsize device. Any comments, improvements or other ways of doing
it, please let me know.
Inspiration was the moth foiler's wands which set the angle of
incidence of the hydrofoil.
Attach a longish skinny float (maybe a piece of 50mm/2" dia pvc pipe
4m long) to a wand so the float is close to the windward hull.
Attach a cam cleat to the wand axle and the bouyancy on the float will
keep the cleat horizontal. If the hull flies, the weight of the
float and the wand, plus the pull from the sheet cause the wand angle
to change, the axle and the cleat rotate and the sheet pulls itself
out of the cleat.
The float has to be long(ish) so it is in the same wave train as the hull.
When it is not required, it can be pulled up under the bridge deck, or
easily removed.
It would be better if the cleat was on top rather than underneath, but
I could not make this work simply.
It would be even simpler if the device was in the boat rather than in
the water, but there is too much motion for this to be reliable.
Compare it to the units the big tris use http://tinyurl.com/6rwtgku
rob