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. Easy-to-build plans for boats, dories, fishing boats, drift boats, qood boats, wooden boats, plywood boats alumninum boats. Boatbuilding terms defined. there’s a wonderful sequence in e.b. white’s stuart little where stuart and a sailor friend mock another boat’s owner, saying he doesn’t.