Re: [Paddlewise] QCC boats and water line length ........

Matt wrote;


>Open Canadian canoes are a relatively specific type of craft without a lot
>of flare and rake as opposed to an umiak or dorie (and I want to exlude the
>Hiada Canoes from this Canadian canoe group too as they also have a large
>amounts of rake and a high bow. I find them extremely seaworthy craft.

(SNIP)


I guess one needs more experience with Canadian canoes to appreciate the
range of shapes etc.


>
>John responded:
>>Yes, open boats do have drawbacks (as do kayaks).  However, having cruised
>>open water succesfully in canoes and learned to deal with those drawbacks
>>(just as paddlers learn to deal with the drawbacks of kayaks ) I guess
>can't
>>appreciate your problems with canoes.
>
>Just what drawbacks of  kayaks are you alluding to? Please be specific.

Difficult to load for one (relative to canoes). Not suitable for
transporting family from one camp to another.  Don't portage well. Just a
few.

>
>"Radius of gyration" gave me a pretty good idea of what you meant but
>without an actual definition (I could understand) I couldn't be sure. Is
the
>definition you offered above (which I have trouble understanding--anyone
>else care to try explaining it to me)


Best I can do. Maybe someone with better teaching skills can try.

>
>John you leave one with so little information to go on about what Gerritsma
>did that now I don't even know if he did an actual experiment or a strickly
>mathematical one.


Based on tank tests at the Delft Tank.


My brother wrote an article about about the effect of weight in the ends of
a boat for Sea Kayaker that you might find useful. Don't recall the issue
but maybe Chris Cunningham does.


>
>When you do direct us to the source I for one would appreciate something
>like (hopefully) a web address or some way where it can be found in an
>efficient manner.

I would have appreciated it too. Don't know if the paper exists on the web.
Not sure I even knew what the web was when I looked for it.


Cheers,
John Winters
Redwing Designs
Web site address, http://home.ican.net/~735769



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