The outboard engines therefore is that sub-sector of the marine engine market, which deals with the building and sale of propulsion equipment for boats and ships of a small to medium size. These engines are mounted outside on the transom of the boat and offer both power for the boat and a steering system that is available in two-stroke and four-stroke engines. Outboard engines are commonly used for leisure and sport activities such as boating, fishing and even commercial activities and they are fundamental components in determining the efficiency of boats.