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The engineers hear the bell and move their handle to the same position to signal their acknowledgment of the order, and adjust the engine speed accordingly. Such an order is called a "bell"; for example, the order for a ship's maximum speed, flank speed, is called a "flank bell". [2]
Large ships, boats and yachts will inevitably have inboard engines. Medium size vessels may have either inboards or outboards, and small vessels rarely have inboard motors. If one has a choice, these factors should be noted: Inboard engines are almost invariable diesel, allowing ruggedness, reliability and fuel economy.
Most engines with four or less cylinders use a straight engine layout, and most engines with eight cylinders or more use a V engine layout. However, there are various exceptions to this, such as the straight-eight engines used by various luxury cars from 1919-1954, [ 1 ] [ 2 ] [ 3 ] V4 engines used by some marine outboard motors, V-twin and ...
Slow speed: any engine with a maximum operating speed up to 300 revolutions per minute (rpm), although most large two-stroke slow speed diesel engines operate below 120 rpm. Some very long stroke engines have a maximum speed of around 80 rpm. The largest, most powerful engines in the world are slow speed, two stroke, crosshead diesels.
Mercury outboards 30 hp and below are manufactured by Tohatsu in Japan. [citation needed] Mercury developed a processor-enhanced line of outboards called the "Verado" outboard engine. [when?] [5] The "Verado" system integrates the outboard into an entire system, including "fly-by-wire" steering and advanced diagnostics. Verado engines are ...
Volkswagen Marine 3.0 litre V6 TDI 265-6 marine engine.This is a marine-modified version of Volkswagen Groups 3.0 V6 24v TDI CR automobile engine.. Marine automobile engines are types of automobile petrol-or diesel engines that have been specifically modified for use in the marine environment.
The new models were renamed the D 35-2 and D 50-2. Many of these auxiliary engines found their way into both racing and cruising sailboats made by companies such as S2, Pearson, Jonmeri, and Hans Christian. Custom yacht builders, such as Lyman Morse in the USA, also installed BMW Marine engines in their boats. BMW Engine Chart
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.