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. Glossary of terms used in boatbuilding and boating. boat speak terms we use to describe our designs. this glossary was originally published in our webletters.. Whether you dream of spending time fly-fishing, snorkeling or just rekindling your passion for nature, this 12′ garvey flex boat offers you the opportunity to.