Mercurys all-new 5hp FourStroke Propane outboard provides more convenience and less hassle. Sail Power model is designed for sailboats and features an alternator and more thrust. Ideal for sailboats, but also a good fit for aluminum tiller, inflatable or jon / utility boats. Compact and Lightweight Digital CD Ignition with Spark Advance High Grade Marine Alloy Construction Stainless Steel Water Pump Housing Zinc Coated Water Passages Rated for Saltwater Use Sacrificial Zinc Anodes Forward-Neutral-Reverse Gear Shift Adjustable Steering Tension Control Forward Mounted Gear Shift Selector Twist-Grip Throttle with Tension Control Integrated Carry Handle Thermostat Controlled Water Cooling Shallow Water Drive