Abstract: A boat construction apparatus and method which comprises a mold assembly with integral frames, stem, knee and keel. The mold assembly consists of a base support portion with a series of frame support members perpendicular to and affixed to the base portion. A center backbone keel support member is interlocked with each of the frame member, the backbone keel is also affixed to and perpendicular to the base portion. The frame support members and backbone are partially pre-cut so that the boat frames and the keel portion are integral with the frame supports and backbone during boat hull construction. After the hull is constructed over the frame support members and backbone support member, the boat frame and keel portion are cut away from the integral support portions, thus freeing the boat hull from the support segment of the frames and backbone.