These are the mortises in the bottoms of the gunwales for the ribs. The gunwales were ripped from a 1X12X14' board of clear, straight-grained red cedar. (I wish I could figure out how to rotate the pics.)
The deck laid out with capture forms on the bow and stern, and spreaders in the middle.
There are three curved, laminated deck beams on the bow end. This is one of them glued and clamped in a jig.