Re: [Paddlewise] question on hull speed

Rafael,

I doubt there is a great difference in speed, in calm waters, 
between two identical length kayaks. As soon it is a lot of waves
any formula will become guess-work!

I would not bother with any fancy formulas,
as a SOT might be short and wide, but at the
same time has a small draught, while a similar
length boat that is narrow will have great draught!

I propose a simple formula that deducts a half knot
per two feet - that is definitely true with our Kleppers:

With similar loads and weights the Aerius II is about .5 knot 
slower than it's bigger brother, the XXL (which is 20 lbs heavier,
but otherwise identical), that is roughly
2 feet (more exact: 650 mm) longer :-)!

I think it is a fairly OK assumption (if not perfect)! 

Tord,
Boston

===========================================

Date: Tue, 20 May 2008 23:24:53 -0500
From: "Rafael en prodigy" 
Subject: [Paddlewise] question on hull speed

I need a solution to a discussion we have here in Mexico.



There will be a Fathers Race on June 22. Everybody is invited, in Veracruz,
18 kms.



Basis allow for all boats to compete under equal circumstances but there are
some SOTs in plastic very wide and slow and some long narrow boats.

The rule and tradition calls for Tour boats. No K1 or race boats or surfskis
are allowed. But among those there are some less than 15 and some above 19
.

-- 
See Exclusive Video: 10th Annual Young Hollywood Awards
http://www.hollywoodlife.net/younghollywoodawards2008/
***************************************************************************
PaddleWise Paddling Mailing List - Any opinions or suggestions expressed
here are solely those of the writer(s). You must assume the entire
responsibility for reliance upon them. All postings copyright the author.
Submissions:     PaddleWise_at_PaddleWise.net
Subscriptions:   PaddleWise-request_at_PaddleWise.net
Website:         http://www.paddlewise.net/
***************************************************************************