"thank you all for being so willing to share in your knowledge, experience and the fabulous boat rides…the camaraderie, family environment and openness of all to. Introducing: myboatplans – "instant boat building!" the complete boat builders resource. over 518 detailed boat plans, schematics, cutting patterns, material lists. 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.