STIX and other measures of seaworthiness

[Bosun Higgs]

My old First 31.7 was Category A provided you went with the deep draft version (1.9m), so it is possible even with a relatively lightly ballasted boat.

When the RCD categories were introduced there was quite a lot of massaging of the figures since the manufacturers, particularly the big French ones felt the market needed to see an A. I found this to be the case when I was interested in buying an Ovni and was able to wring the normally not published data out of the manufacturer. If I can get my backup system to recover the file I'll give you the data

 

[doug748]

I would be very interested to see them, if you could dig them out Bosun.
There have been alegations of jiggery pokery with these figures (here and on US based forums) but my elementary arithmetic has not been able to nose it out.

 

[Robin]

I wonder what the STIX/AVS of Shane Acton's 21ft plywood bilge keel Caprice 'Shrimpy' was that he sailed around the world or the many other boats that managed transats and more in days of yore.

Boats sail on oceans, not spreadsheets.

BTW knockdowns and rollovers of monohulls come from the waves rather than wind pressure, irrespective of righting moments, ballast ratios or whatever. Any boat can roll if it meets the 'wrong' wave.

 

[FullCircle]

When the RCD categories were introduced there was quite a lot of massaging of the figures since the manufacturers, particularly the big French ones felt the market needed to see an A. I found this to be the case when I was interested in buying an Ovni and was able to wring the normally not published data out of the manufacturer. If I can get my backup system to recover the file I'll give you the data

The Ovni is the bumble bee of bluewater. Shouldn't be able but is. Jimmy Cornell has one, good enough for me.
I would have one if I had the money.