In order to preserve Bald Head Island's natural tranquility, its developers have banned cars, and residents have to get around by golf cart and bicycle. Travel to and from the island is by a small fleet of aluminum hulled crew boats. When it came time for the owner's to build a new boat and repower the existing two-cycle boats, they shopped hard and finally settled on Cummins KTA 19M3 engines producing 640 hp each with a Heavy Duty rating. All told, they have ordered six of these well-proven engines. Two will go into a 65-ft. (19.8-m) aluminum boat in January 2003. These will be coupled to ZF665A gears with a 1.75:1 ratio turning 32x34-inch four blade Michigan propellers.