The underside of the hull forward of the keel has an additional layer of glass. This part of the boat is the most likely bit to make contact with floating debris and submerged objects. The underwater part of the bow will have 3 layers of glass plus tape on the joint along center line.
The holes for the pin and the pennant of the centre-board are filled with epoxy, ready to be drilled out again. The edges have another thick layer of epoxy to ensure that the end-grain of the plywood is sufficiently protected against any ingress of water. After sanding these edges, I will roll on another coat of epoxy over the entire centre-board. This will then be sanded smooth – up to 240# grit.