Outboard motors for propulsion systems for ships, which consist of standalone units which include engines, gearboxes and propellers or drive jets, which are designed to be affixed to parts of the boat (boat transom).
For more than 30 years Yamaha has been a reliable supplier of engines for seafarers, these machines are designed to be very durable for continuous use for hours. Yamaha went through a rigorous testing process for years and produced great features.