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Kayak and Canoe Design Bulletin Board
Re: Whats the most important?
Posted By: Nick Schade In Response To: Whats the most important? (Pete W. P.)
Date: Friday, 3 December 1999, at 9:20 a.m.
No one parameter is going to be "most" important. I haven't tried to do it, but I can say with some confidence that you can not change one parameter (say Prismatic Coefficient) without effecting at least one of the other parameters and chances are you will change many of the parameter. A consequence of this is it hard to make a boat which is really "good" in one parameter yet really "bad" in another. If a boat is good or bad in any given parameter, chances are many other parameters are similarly good or bad. In other words if one design parameter is really "bad", enough other parameters of the boat will be "bad" that the whole boat will be no good.
The most important thing is that all the parameters be at least "pretty good".
> Ive been doing some reading of specs and such on various kayaks. They
> mention such things as Prismatic Coeficient, Block Coefficient, Wetted
> Surface in Square feet, Lbs per inch of emmersion. My question is this,
> how does one read all that to make any sense of it? Say a kayak has very
> little wetted surface but a poor prismatic coeficient... whats that mean?
> Say it has a terrific prismatic coeficient but a terrible block
> coefiicient... whats that mean?I know what a Ballistic Coeficient is, but
> still im fuzzy on prismatic and such.> Ultimately, how does one interpret those data to decide wether a specific
> kayak will cut the water like a knife, or slag along like a barge?> Many Thanks,
> Pete
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