Outboards

An outboard is a motor that is mounted on a rigid transom of a boat.

An outboard motor does not take up any useful volume of the vessel and can be easily removed, which makes it possible to store an expensive unit in a safe place.

Initially, two-stroke engines were widely used. Their advantages are light weight, high specific power, simplicity of design and general unpretentiousness in operation. Gradually, their disadvantages, as four-stroke engines improved, led to a reduction in the number of two-stroke engines. Efficiency, longer service life, ease of use, and power density, which increases with the improvement of technology, are the main reasons for the widespread transition to four-stroke design.

Growing environmental requirements, a direct ban on the use of internal combustion engines, and some water bodies have led to the development of virtually silent battery-powered outboard motors.