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> I only have common experential engineering experience. I was hoping this idea
> might stimulate some of those windsurfing engineers out there to calc it out.
> I think a 12" bouy similar to the ones divers use would do.
Well, okay. Figure 5 pounds each for mast, sail and boom. Assume
they fill with water and ignore their displacement, so we need
(pessimistically) 15 pounds flotation. Water is 1 kg/l = .036 lb/in^3
so we need 416 cubic inches or a sphere 9.3 inches in diameter.
A ball 12" in diameter has more than double this volume, so it would
be plenty of flotation.
I would vote for floating the rig rather than the 100' of line, since a
long line can catch someone's fin when they sail near to see what the buoy is.
The problem would be that finding a 12" buoy, moving with the tide, in
2-4' swell is really hard, just like finding a windsurfer down in the
water. But if this is what it takes to get soemone to cast off their
rig to swim in, then it's well worth it! Put your name and phone number
on it.
Ken Poulton
poulton@opus.hpl.hp.com-DeleteThis
"hSit happens."
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