Catalogue of all small boat plans and custom small boat designs by tad roberts. plans for plywood, lapstrake, plank-on-frame, cold-molded, sheath-stripped, and. Boat plans . shopcam supplies sailboats glued plywood lapstrake hulls. to be sure, but glued lapstrake boats still require molds and arcane joinery skills.. Building a glued lapstrake rangeley lake boat page 6: scarfing planking material and hanging garboards. the plywood is okoume, an african hardwood,.