[Rhodes22-list] Rhodes22 Stats

[Tootle]

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)
> 

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