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. Cabin cruiser, free sailboat plans petrel you can build this 16ft boat as a day sailer or an overnighter with cabin. petrel is a free sailboat plan that fulfils the. Proven boat designs, and how-to information for boat building. boat plans are for beginners and have been built by thousands since 1953..