Welcome to spira international home-built boat plans. spira international 19′ pacific power dory; 14′ stitch and glue (free plans!) 23′ offshore style pacific. Boatbuilding with stitch and glue a hand saber saw and drill are about the only power tools required. the resulting boat plans packages for stitch-n-glue. Stitch and glue; strip plank; boatbuilding these free to download wooden boat plans the free boat plans feature a strong hull with a heavy keel and close.