Re: [Paddlewise] Stability/Performance. . .

From: John Winters <735769_at_ican.net>
Date: Fri, 22 May 1998 07:50:56 -0400
.Jerry wrote;



(SNIP)
>
>
>Yes, but this begs the question.  Is an experienced, competent, but
perhaps
>tired, paddler less likely to be knocked over in rough conditions in a
>relatively stable narrow boat like a Solstice GTS or Mariner II than in a
>relatively tender narrow boat like a Looksha II or Nordkapp?  Maybe not at
>the ultimate expert level of skill but I think yes at the moderately
expert
>level of skill.

Whether he will be capsized or not depends upon the shape of the stability
curve, the paddler's experience with the boat, and his overall ability.
That is why the nature of the boat relative to the paddler and the
paddler's objectives is so important.

It is always possible to postulate some condition where one or the other is
inadequate to the objective and that is the direct result of using boats
that are not self righting and rely upon the occupant for power, control,
and stability. For instance, a boat with high form stability is always at
greater risk of capsizing in breaking beam seas until the paddlers are
tired and then it probably doesn't make much difference what boat you have.

A tired paddler might well be better off in a more stable boat but when he
isn't tired he may be better off in a less stable boat. A boat with higher
form stability may actually cause an increased chance of sea sickness due
to its quicker motion so even though the boat might seem safer it may
contribute to creating an unsafe situation.

Postulating that one or another boat  is best for any given set of
environmental circumstances is always full of risk because the boat and
paddler are a system not separate and discreet entities.

Cheers,
John Winters
Redwing Designs
Specialists in Human Powered Watercraft
http://home.ican.net/~735769/


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Received on Fri May 22 1998 - 07:10:39 PDT

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