MANUALLow weight and awesome torque get your boat on plane quicker and provide best-in-class acceleration to complement best-in-class top speed. A perfect match for aluminum tiller, soft-hull inflatable, jon / utlity, or sail boats. 2016 Mercury Marine FourStroke 15 hp All-in-one Performance Intuitive maneuvering for precise control. Efficiency and performance you can count on. In the shallows or the deep. Focused control, streamlined design.