Free boat plans from "science and mechanics", links to other sites with free boat plans. free boat design resources; www.absolutelyfreeplans.com;. Welcome to absolutely free plans, in this section you will find free boat building plans including accessories and construction techniques. (wooden) sailboat. Free plans for stitch and glue boatbuilding. you decide if you like the look of the boat before you spend a lot of time and money building a wooden boat from.