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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. They are the most common motorised method of propelling small watercraft.
In marine propulsion, a variable-pitch propeller is a type of propeller with blades that can be rotated around their long axis to change the blade pitch. Reversible propellers—those where the pitch can be set to negative values—can also create reverse thrust for braking or going backwards without the need to change the direction of shaft revolution.
Previously, as with other outboard brands and Mercury's smaller models, exhaust exited from a chute at the rear of the cavitation plate above the propeller. Thru-hub exhaust was claimed to be more efficient by omitting the added drag of an exhaust chute, and using the low-pressure area necessarily created by the gear housing and propeller ...
British Seagull was a British manufacturer of simple and rugged two-stroke marine outboard motors, produced from the late 1930s until the mid-1990s. Originally based in Wolverhampton, the company moved to Poole, Dorset, a centre for boating and yachting. Seagull engines were utilitarian outboards with a relatively slow-turning prop.
Marine steam reciprocating engines, ca. 1905 A wind propelled fishing boat in Mozambique. Until the application of the coal-fired steam engine to ships in the early 19th century, oars or the wind were the principal means of watercraft propulsion.
Outboard Marine Corporation (OMC) was a maker of Evinrude, Johnson and Gale Outboard Motors, and many different brands of boats. It was a multibillion-dollar Fortune 500 corporation. [ 1 ] Evinrude began in Milwaukee, Wisconsin in 1907.