I’ve decided to make the plans for my stitch & glue guillemot available to internet users as "share ware". if you end up building this boat please send me a. Boat plans for power, sail and small boats. free boat plans. boat kits and supplies plus the best boat building technical support.. Welcome to spira international home-built boat plans. spira international offers a wide variety of different power, rowing, and sailing skiffs, dories, and other boat.