The JetPac by Outboard Propulsion Systems, LLC, has been successfully introduced after five years of research and marine testing. The new, patented, outboard propulsion system mates a reliable automotive engine with a high performance, large diameter, waterjet in a single, stand-alone unit. The JetPac mounts conveniently to the transom of most small craft. The self-buoyant power units are currently available with either a 150 hp turbo-diesel or 275 hp V8 gasoline engine mated to its 250-mm (10-in.) water jet. The patented design places all components of the propulsion system, other than gauges, controls and fuel, behind the boat's transom.