I have used a combination of traditional and modern techniques and a lot of help from friends and family that I refer to as the "planking crew."
The dory is being built with plans from http://www.doryplan.com/
In summary, the rib construction involved learning the traditional building method from The Dory Book, harvesting white oak logs with a major branch sticking out at nearly the correct angle, milling the logs into 1 inch thick boards, drying boards in solar kiln, planing boards from 1 inch down to 3/4 inch (20 mm) thick, using a plywood form to mark and rough cut the rib shape from the oak board, use the same plywood form and a router to create the final rib shape, and join 2 halves with a finger joint for installation. Each of these tasks will be discussed in detail in the following Steps.
A word on nautical terminology. There is a lot of it and I'm just learning it. Jack left port (i.e., left = port) is my starting point. And there are multiple words for the same thing. Ribs = frame = brace = knees and sometimes are combined like knee brace. I'll use "ribs" throughout.
The primary purpose of the dory is to carry picnic supplies and picnic princesses (i.e., persons not rowing) to islands off the coast of Maine. There are a lot of picnic princesses in our family, hence, why I am building an 18 foot boat.