On the big boats, I don't think it makes an appreciable difference. Flying a hull with a flexible mast would require a lot of effort. If you can fly a hull on a Visionarry, then by the time it is far enough off the water for the deck (which is mostly solid for the saloon and dinghy ramp) to have an effect, you are probably going to capsize regardless of whether there is a few sq m more or less of solid vs net.
However, I would ensure very large scuppers on a solid deck. If a wave broke on it and could not escape, the boat;s displacement would more than double.
On the little boats, it is important, not least because it is such a large area once the hull is airborne. If you intend flying a hull, then the finest net that you can comfortably/safely walk on will make a large difference. Net is very draggy, which is presumably why racing beach cats all use near solid material. Hold a piece of trampoline up to the wind or try and drag it through the water and you will see what I mean.
On the bright side, if you do capsize, the boat will swing around with the mast pointing upwind and the windage on the tramp will help a lot with righting it.
On Tue, Feb 17, 2015 at 6:15 AM, lucjdekeyser@telenet.be [harryproa] <harryproa@yahoogroups.com.au> wrote:
As we are on the theme of safety what about the proportion of full vs tramp covered space between the beams? HP's as designed leave at least 50% of tramp space. Some HP's as built have pretty much closed off all deck space. The Steinmar inspired designs are almost fully tramp. To what proportion would this ratio influence the overall safety index of the HP?
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Posted by: Rob Denney <harryproa@gmail.com>
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