Spira international wooden boat plans. following are the stock plans available for the various types of boats, separated into the different categories.. The redwing 21 is a capable pocket cruiser. she has simple pleasing lines and will be a joy cruising the waterways. she is designed for various power including. 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..