Boat plans, yacht designs and boat kits for boats built from wood epoxy, plywood, fiberglass, steel and aluminum, boats plans for round bilge, multi-chine and radius chine boats, from dinghies to cruising sailboats and power cruisers, rowing shells, boatbuilding advice and boatbuilding photographs. All specmar welded aluminum hulls have been specifically designed for welded aluminum construction and computer guided cutting. each design is intended to speed production, improve accuracy, and minimize both shop time and man-hours. detailed assembly drawings and written assembly instructions are provided with each design.. Proven boat designs, and how-to information for boat building. boat plans are for beginners and have been built by thousands since 1953..