Free plans: absolutely free plans (links to free online boat plans) ariawood boat works (plywood punts, jonboats and one-sheet boats) architectura navalis mercatoria. Links to boat plans some free boat plans, boat building information including plywood stitch and glue. full range of boat plans from sophisticated yachts to plywood. Characteristics. length: 3,01 m design: paolo lodigiani chine hull, stitch and glue construction round hull, strip planking construction building skills: amateur.