Below are free plans from the web for building a plywood boat. over 40 free plans. boating is full of thrill and adventures, and you will be glad to make it a part of. Boat plans for power, sail and small boats. free boat plans. kits and supplies plus the best boat building technical support.. Clark craft offers hundreds of boat plans, design patterns and complete boat kits, and a full line of boat building supplies and accessories for the amateur boatbuilder..