[Paddlewise] Stability

If any of you think we are beating a deadhorse to death just say so and I 
will make this my last post on this topic. .

Robert Livingston wrote; (Lots of SNIPS)

>Now, as a designer, try the following. Increase the waterline width of a
>design (any design) by 1 inch. Now try and attain the same increase in
>primary stability by changing the waterplane. You cannot do it for all
>intents and purposes. The impact of that 1 inch is SO great and the impact
>of changing the waterplane shape within the "family" of shapes seen in
>commercial designs does not approach it. Certainly if the waterplane
>coefficients are between .6 and .7 If you think that one inch is a lot, you
>will find that it applies to 1 cm as well for all intents and purposes.

I started with a conventional design of my own  that had a righting arm of 
0.0018 at 1 degree and increased the beam by 1 inch to get a righting arm of 
0.0026.

Without turning the boat into a freak (I gave it hard chines and fiddled 
with the ends of the boat) while keeping the original waterline beam I 
increased the righting arm to 0.0028. I think with a little effort I could 
probably get it up to 0.0030 or maybe more.

These were interesting excersizes and ones that I probably would not have 
done without prodding from Robert and Nick.

Thanks guys. Without this kind of stimulation I think my mind would really 
go stale with this retirement stuff. OK, maybe my mind was stale before 
retirement. :-)

Cheers

John Winters
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