These plywood power catamaran boat plans help you construct this modern catamaran for twin outboards. buy power catamaran boat plans & more at bateau.com!. Modern ocean sailing junks, junk-rig sailboats. plans comply with european standards for circumnavigation. plans for the amateur builder or professional, strip-planking.. Arch davis design – offering boat plans, kits, videos and dvds for the amateur boat builder including sail boats, row boats and power boats..