I built the green pram using the stitch and glue method of boatbuilding. the plans were free. follow my day to day diary building gavin atkin’s apple pie dinghy.. free stitch and glue boat plans in no particular order..  8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins.. 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 designs that are simple to build, rugged and seaworthy..