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trolling motor
A trolling motor is a self-contained unit that includes an electric motor, propeller and controls, and is affixed to an angler's boat, either at the bow or stern. A gasoline-powered outboard used in trolling, if it is not the vessel's primary source of propulsion, may also be referred to as a ''trolling motor.'' Trolling motors are often lifted from the water to reduce drag when the boat's primary engine is in operation.
==Uses==
* Trolling for game fish; a motor used for this purpose is usually a secondary means of propulsion, and mounted on the transom alongside the primary outboard motor or on a bracket made for the purpose.
* Auxiliary power for precision maneuvering of the boat, to enable the angler to cast his bait to where the fish are located; trolling motors designed for this application are typically mounted in the bow.
* Primary source of propulsion for smaller water craft, such as canoes and kayaks, and on lakes where the use of a gasoline-powered engine is prohibited; usually transom-mounted.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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