RE: [Paddlewise] Hull speed isn't wave climbing

From: Allan and Joyce Singleton <alsjfs_at_voyager.co.nz>
Date: Wed, 16 May 2001 21:32:51 +1200
>From Michael Daly:
>
> So I  would argue
>  that you're not climbing the wave, you're pushing it at a bad
>  angle - your cutwater now includes the whole bottom of your hull!
>
Which is what a power boat does on the way towards planing.

If you take a 5.2m (17ft) kayak, say waterline 5m, then hull speed is 5.6
knots. According to the figures Matt gave, it takes a top recreational racer
in a long narrow kayak to achieve this kind of speed, so most of us do not
exceed  theoretical hull speed anyway and don't have to worry about the bow
wave.

The kayak I use for exercise is 5.2m, as above, and I average just over 4
knots for the hour I am on the water. As the all up weight is 200lb, not
300, this would put me in Matt's category 3, a fit and efficient paddler (if
I could keep it up for several hours!).

Allan Singleton


***************************************************************************
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/
***************************************************************************
Received on Wed May 16 2001 - 03:09:02 PDT

This archive was generated by hypermail 2.4.0 : Thu Aug 21 2025 - 16:30:42 PDT