These plywood power catamaran boat plans help you construct this modern catamaran for twin outboards. buy power catamaran boat plans & more at bateau.com!. Malahini, a plywood boat. assembling the frame. beginning to attach the planking. things i will do differently next time. begining to fiberglass. painting her bottom.. Woodenboat magazine for wooden boat owners and builders, focusing on materials, design, and construction techniques and repair solutions..