JEM Watercraft

Hello All,

I have been following this site for a few years. When I first started looking at kayaks I thought about building one but decided to buy a plastic boat a Tarpon 100, to see if I liked it. I love the boat and have fished out of it comfortably for the last couple of years. While I started doing camping trips last year and have grown to love it. But with this new love a new kayak is in order, something with a little more packing room.

I have watched many posts and I believe that I have gotten the jiffs of things. I decided to buy the book canoecraft to understand if I wanted to do a STG or a strip built? I started reading and got to the "Table of Heights" and "Table of Half-Breadths" I thought that I understood these but my curves are not coming out in the fashion that are making sense I will try to add a picture of what I have so far.

I have googled these tables and many people refer to lofting? Would anyone be willing to give a explanation. I just would like to understand this before moving on in the book.

Table of Heights (Dimensions are in Feet-inches-eights)
Station 12 11 10 9,8,7,6,5,4,3,2....etc.
Sheer 0-06-4+ 0-07-1 0-07-4+
Butt 2" 1-03-3+ 1-05-0 1-05-4
Butt 4" 0-11-5 1-04-0 1-05-1
Butt 6" 1-02-0 1-04-3
Butt 8" 0-08-5+ 1-02-7+
Butt 10" 0-10-7+
Butt 12"
Profile 1-0-5 1-05-3+ 1-05-5+

Table of Half-Breadths (Dimensions are in Feet-inches-eights)
Station 12 11 10 9,8,7,6,5,4,3,2....etc.
Sheer 0-05-2+ 0-08-2+ 0-10-5
WL 4"
WL 6"
WL 8" 0-05-0 0-08-1 0-10-4+
WL 10" 0-04-4 0-07-5 0-10-1+
WL 12" 0-03-6+ 0-07-0 0-09-5
WL 14" 0-02-7+ 0-06-0 0-08-5+
WL 16" 0-01-4 0-04-0 0-06-5+

I want to Thank anyone in advance for taking the time to respond or even to read this.

Thanks!

I don't know I could explain it any better than the book.

For the offsets, think of the "Butt" as stations. You measure the distances and that helps develop the curves. Those type plans start with a baseline and you measure the distances from that. It can get complicated and that's why I design my plans the way I do.

Half-breath is like "half the beam". It's the measures going out left or right as if you're looking straight at the boat from the end.