OK, that helps. The picture of the mold shows them solid, except for frame 5. That's right behind the seat and behind the guy when he's shown holding the boat. So 5 is cut as shown in drawing 2, and stays in the finished boat for strength and to support the coaming, which is the narrow deck that runs along the sides. The limber hole at the keel lets water drain through frame 5.
The transom mold also stays in the finished boat, you can see it and frame 5 are attached to the strong back with temporary legs that hold them in place. They are cut off at the sheer line.
All the other molds, 1,2,3,4,6,7 and the stem piece are cut off at the base line. That means when they are set on the strong back, the strong back will be the base line so the molds are automatically set at the right height to get the right curve to the keel line. So that's why you should figure out the table of offsets.
On the molds there is a hole labeled 'alignment hole'. That is so you can stretch a string from the transom to the stem/bow and line up all the molds side to side (on their centerline) so they are in a straight line.
The stem/bow attaches perpendicular to the #1 mold and the strong back. In the table of offsets it shows 3 height measurements for the stem, but there are 4. Since it is flush with mold 1 at the keel, the keel measurement on the stem is 19-2 and then the rest are as shown, 13-4, 6-4 and 2-4. The other measurements for the stem are forward from mold 1 and are shown at the bottom of the table. The S is 18-6, the U is 18-2, etc.
The measured points on the molds were connected by drawing lines between the points with a straight edge, but the stem mold is curved so you have to draw the lines differently. Once you get the measured points (+) marked on the plywood, at each point you drive in a small nail leaving it straight up from the ply an inch or so. Then you get a strip of thin wood or plastic, something that will bend evenly and smoothly around the nails and then mark the curved line.
Did you get the drawings from the book?
There is hardly anything I can read on them, but I can tell there is a lot of information there.
I think all you need to know to make the boat is in the drawings and the book. It would be good if all of it was posted and readable, the drawings and the written book section and photos, but there might be copyright issues with that, I don't know. There might be anyway with just the drawings posted, but again, I don't know.