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The outdrive unit of a boat with sterndrive. A sterndrive or inboard/outboard drive (I/O) is a form of marine propulsion which combines inboard power with outboard drive. The engine sits just forward of the transom while the drive unit (outdrive or drive leg) lies outside the hull.
Basic parts of an outboard motor. An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom.
SeaCore is a brand of sterndrive marine propulsion systems manufactured in the United States by MerCruiser. The SeaCore engine design utilizes materials, technologies, and systems, created specifically for Mercury Marine, to prevent galvanic corrosion within its engine, transom and drive.
The Welch plug is a type of core plug that is made from a thin disc of metal. The Welch plug is dome-shaped and inserted into the casting hole with the convex side facing outwards. [6]
The engine sits just forward of the transom while the drive unit (outdrive or drive leg) lies outside the hull. Volvo Penta holds a US patent for the Forward Drive.
Motorized transport was just becoming an everyday part of life in 1907, when Ole Evinrude first mass-produced a practical outboard engine for boats. Evinrude placed an advertisement in a motor magazine to introduce his motor, drawing so many inquiries from U.S. and overseas readers that he decided to try large-scale production.
Later that year Kiekhaefer used his boat engineering and NASCAR skills to develop the 100 hp stern drive engine now known as MerCruiser. When Kiekhaefer resigned as president of the company in 1969, the company name changed to Mercury Marine. In 1970 he founded Kiekhaefer Aeromarine Motors, building racing engines.
The business also manufacturers sterndrive and inboard drive systems such as the Volvo Penta IPS. [3] The engine program comprises petroleum fuel ( diesel and gasoline ) engines with power outputs of between 7.5 and 1,500 kilowatts (10 and 2,039 PS ; 10 and 2,012 bhp ).