8′ puddle duck racer one design racing sailboat based on bolger brick. developmental class, defined hull, unlimited sail rig and underwater fins.. Hartley 30 for construction in either plywood or steel 30′ (8.98m) multi-chine flush-deck fast sailer. three versions – centreboard – fin keel – bilge keels. Links to boat plans some free boat plans, boat building information including plywood stitch and glue. full range of boat plans from sophisticated yachts to plywood.