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In the years since Yanmar introduced the diesel outboard engine it has created waves of excitement in the world of marine power. Now, instead of the fickle performance common to so many gasoline engines, the diesel outboard presents a level of stability, savings and long-term strength that make pure sense to the commercial operator. Tested through time and trials, these engines have proven to live up to Yanmar's aims, gaining both spectacular and solid achievements. Twin Yanmar diesel outboards powered a seacraft for the first time across the Pacific from San Francisco to Hawaii; a record 2250 miles of non-stop running using only 385 gallons of fuel. Other diesel outboards are powering the economies of numerous coastal communities. Now in expanded production, the Yanmar diesel outboard is ready to serve even wider in a broad array of commercial duties.

When it comes to marine diesels, reliability is most highly valued factor of all. Each Yanmar diesel has been designed and manufactured using knowledge accumulated steadily since  founding in 1912. Such experience is a major key to the reliability of these engines.

For motorboat use, Yanmar makes main engines up to around 300kW. Like sailboat propulsion units, their reliability is legendary; but they are also light, compact and powerful. Fuel economy advantages over gasoline are dramatic, as is engine life. Yanmar diesel engines run further and more efficiently between tank refills, while being amongst the most dependable engines on the market today.