Kayak and Canoe Design Bulletin Board

Re: Reading Plans

Posted By: Greg
Date: Thursday, 2 March 2000, at 12:01 a.m.

In Response To: Reading Plans (Steve A.)

> Hi, I am hoping to build a pair of cedar stip kayaks and have been reading
> Ted Moores book Kayak Craft. This book includes plans given as a series of
> coordinates for each station. Having studied the numbers I can make sense
> of everything and get a reasonable looking shape for the hull but when I
> try to draw the deck I run into a problem. The numbers given for the
> height of the sheer and the height of the profile on the deck don't make
> any sense at all unless I reverse them, applying the profile height at the
> sheer and the sheer height at the profile. Things then look pretty good
> (the buttock heights look okay as presented) except the sheer taken from
> the deck height table (using the profile number) falls 1/4" below the
> sheer taken from the hull height table. So I have two questions:

> 1)Is there an explanation for the reversing of the sheer and profile
> numbers in the deck height tables?

> 2)Why don't the sheer heights - hull and deck - correspond? (It did occur
> to be that the difference might result form the thickness of the skin but
> if that were the reason I would expect the deck to register 1/4"
> above the hull, not 1/4" below)

> One last note: Since I don't know how to read these plans I established my
> reference lines by assuming the sheer of the hull to be a common point in
> the breadth and height tables for a given station and working backwards to
> get the reference lines. It appears the horizontal reference lies above
> the kayak as it sits in a natural, upright position. Is this usual?

> Any comments about this book and the plans it contains would also be
> appreciated.

> Thanks.

> SAnderson

Checkout bearmountain, the builders forum has this and other questions and their answers.

Greg

http://www.bearmountainboats.com/

Messages In This Thread

Reading Plans
Steve A. -- Wednesday, 1 March 2000, at 10:12 p.m.

Re: Reading Plans
Greg -- Thursday, 2 March 2000, at 12:01 a.m.

Re: Reading Plans
Darrell Pearse -- Thursday, 2 March 2000, at 11:04 a.m.

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