Credit Chaparral’s Extended V-Plane hull. Its sharp bow, extended running surface and tight aft corners allow the craft to power through turns with exceptional results. The design also enhances low-speed stability, provides a soft and dry ride, and improves fuel economy. With a 300 hp Volvo Penta Duoprop sterndrive under the sun pad, we powered the 247 SSX onto plane in 5.1 seconds, achieved 30 mph in 8 seconds, and topped out at 46 mph. The best cruising fuel economy we noted occurred with the engine turning 4,000 rpm, the boat making about 28 mph, and a net fuel economy of nearly 3 mpg. Fast, efficient and fun.