Once I had the boat drawn, I decided to test the offset table by building a scale model. I decided on a scale of 1 to 10, for two reasons. First, the kayak is 216 inches (18 feet) long, making for a 22 inch long model. This is terribly convenient, because my material in 24 inches wide. Secondly, this 1:10 scale is easy to do in your head.
 

The material used is birch modeler's plywood, 12x24x1/32, 3plys. I taped the sheet to the drafting table, and used the offset table to lay out the points. Next, I cut out the panels with an x-acto knife. I drilled some holes, and sanded the edges so that the pairs of panels match. Also, I cut out the bulkheads and building frames (not pictured).

I used a sewing needle and ordinary polyester thread to stitch together the panels. Next, I stitched in the bulkheads and building forms. I did not attach the forms to a strongback, I just eyeballed it for straightness.

Epoxy thickened with colloidal silica was used for internal fillets, applied with a syringe. Later, the threads were cut or sanded off, and epoxy was applied to the entire hull, inside and out.

Another view of the hull; bow is to the right. On the model, the keel is unfair (flat to concave) in the area right beneath the cockpit.

What the model has shown me:

As I expected, the hardest areas to stitch together will be the bow and stern chines.

One bulkhead ended up 0.1 inches too high. Sure enough, I made a mistake on the plans, drawing the bulkhead correctly, but writing a number 1 inch too high.

I must keep an eye on the fairness during assembly, and correct the offset table.

I like the looks of this little boat. Someday, I will put a deck on, and finish it, but not today! I just purchased the okoume plywood to build the real thing.