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Two common definitions used today are the imperial horsepower as in "hp" or "bhp" which is about 745.7 watts, and the metric horsepower as in "cv" or "PS" which is approximately 735.5 watts. The electric horsepower "hpE" is exactly 746 watts, while the boiler horsepower is 9809.5 or 9811 watts, depending on the exact year.
Engine power is the power that an engine can put out. It can be expressed in power units, most commonly kilowatt, pferdestärke (metric horsepower), or horsepower.In terms of internal combustion engines, the engine power usually describes the rated power, which is a power output that the engine can maintain over a long period of time according to a certain testing method, for example ISO 1585.
In 1949, the company also introduced its first large outboard, the approximately 40 cubic inch, 4 cylinder in line, "Thunderbolt". This engine was rated at 25 horsepower, but actually put out around 28. There was soon an "H" version designed for high rpm use. This version put out nearly 40 horsepower, while being rated at "25+".
The boat has a draft of 3.00 ft (0.91 m) with the centerboard extended and 7 in (18 cm) with it retracted, allowing beaching or ground transportation on a trailer. [1] A bracket is standard equipment and the boat is normally fitted with a small outboard motor of 2 hp (1 kW) for docking and maneuvering. [1] [7]
The Z engine was a 12-18 horsepower, 4 cylinder, L-head design that was said to resemble the model T Ford engine. By 1924 the company was in poor financial condition and Mulford managed to buy back the marine engine division, re-establishing Gray Marine Motor Company. Gray Motor Corporation ceased producing cars by 1926.
Yamaha numbers its models according to their make (in the case of the SuperJet, all models begin with the letters SJ) followed by the engine size (given in approximate cubic centimeters— the 650cc referred to as 650 and the 701cc referred to as 700) and the year in which the vehicle was made, given as either a one or two letter designation and increasing by one ‘letter' each full year ...
These range from 2-, 3-, and 4-cylinder models generating 15 to 135 horsepower (11 to 101 kW) suitable for hulls up to 17 feet (5.2 m) in length to powerful V6 and V8 cylinder blocks rated up to 627 hp (468 kW)., [2] with sufficient power to be used on boats of 37 feet (11 m) or longer.
For example, the M-19 can mount a 40 horsepower (30 kW) outboard, the M-26-X can mount a 50 horsepower (37 kW) outboard and the M-26-M can mount a 60 horsepower (45 kW) outboard. With these large engines, the boats are capable of speeds of over 20 knots (37 km/h), and the M-26-M brochure shows a picture of the boat pulling a waterskier .