[Rhodes22-list] Rhodes22 Stats

Mary Lou Troy mtroy at atlanticbb.net
Wed Jan 24 20:01:37 EST 2007


Ed,
Stan says use 6 to 6.5 feet.

Mary Lou

At 07:11 PM 1/24/2007, you wrote:

>Lee and Mary Lou:
>
>Right off the bat this guys computation is not going to be valid using the
>numbers posted.  The issue is there is no measurement for beam at waterline.
>This number is very important for accurate calculations.  As you are aware,
>the R22 has a flaired hull.  The narrower hull at waterline changes all
>computations.  That is speed, stability, capsize ratio, etc. What is the
>beam at waterline?
>
>Ed K
>Greenville, SC, USA
>
>
>
>
>
>
>Leland wrote:
> >
> > Here's something I haven't seen before.  It was posted 9-1-06 by a guy
> > from Pontevedra, Spain on the Boat Design Forum of Boatdesign.net:
> >
> > Using numbers at http://www.rhodes22.com/spec.html , I get for the Rhodes
> > 22:
> >
> > Length/Beam ratio (Lfl+Lh)/2B = 2,63
> > Ballast/Disp Ratio Ball/Disp = 0,24
> > Displacement/Length Ratio D/L = 161,47
> > Sail Area/Disp. Ratio SA/D = 16,52
> > Power/ Disp. Ratio HP/D = 6,9 HP/ton
> > Hull speed HSPD = 5,99 Kn
> > Potential Maximum Speed PMS = 6,8 Kn
> > Velocity Ratio VR = 1,13
> > Capsize Safety Factor CSF = 2,25 (OK under 2)
> > Motion Comfort Ratio MCR = 13,51
> >
> > Angle of Vanishing Stability AVS = 114 º
> > Heft Ratio HF = 0,64 (OK over 1)
> > Roll Period T = 1,4 Sec
> > Roll Acceleration Acc = 0,27 G's (Malaise 0.1+)
> > Stability Index SI = 0,57 (Comfort: 1 ­ 1,1)
> > __________________
> > Guillermo Gefaell
> > Motorsailers & Motorsailing
> > Banjer 37 Motorsailer Club
> >
> > At this year's Annapolis Boat Show I mistakenly described the Rhodes22's
> > stability as "tender."  I was corrected and now describe it as "spirited."
> >
> > Lee
> > 1986 Rhodes22  At Ease
> > Crab Alley (Kent Island, MD)
> >
>
>--
>View this message in context: 
>http://www.nabble.com/Rhodes22-Stats-tf3085917.html#a8592294
>Sent from the Rhodes 22 mailing list archive at Nabble.com.
>
>__________________________________________________
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