Power sharpie.kayleigh is a power sharpie: from her clipper bow to her high, tucked transom, she is every inch a classic. the flat, rockered bottom provides easy. Study plans are available for some of these designs – remember a study plan gives you more details and a wood materials list usually on two a1 sheets. This design (plan) is a 28 ft aluminum catamaran. power is two (2) 115 honda outboards. at 8,466 lbs displacement with 100 gallons of fuel, the catamaran achieved 28.