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The capsize screening formula (CSF) is a controversial method of establishing the ability of boats to resist capsizing. It is defined for sailboats as: Beam / ((Displacement/64.2) 1/3), with Displacement measured in pounds, and Beam in feet. A lower figure supposedly indicates greater stability, however the calculation does not consider factors ...
Outboard motor shaft lengths are standardized to fit 15-, 20- and 25-inch (38-, 51- and 64-centimeter) transoms. If the shaft is too long it will extend farther into the water than necessary creating drag, which will impair performance and fuel economy. If the shaft is too short, the motor will be prone to ventilation.
The boat has a draft of 6.42 ft (1.96 m) with the standard bulb fin keel and 4.33 ft (1.32 m) with the optional shoal draft keel. [1] [4] The boat has a PHRF racing average handicap of 72 with a high of 84 and low of 66. It has a hull speed of 7.03 kn (13.02 km/h). [2] [4]
The boat has a draft of 4.00 ft (1.22 m) with the standard keel and 3.00 ft (0.91 m) with the optional shoal draft wing keel. [ 1 ] The boat was originally fitted with an outboard motor well, but some later ones were equipped with inboard Universal Atomic 4 gasoline or Universal diesel engines .
English inventor Francis Ronalds described what he called a propelling rudder in 1859 that combined the propulsion and steering mechanisms of a boat in a single apparatus. . The propeller was placed in a frame having an outer profile similar to a rudder and attached to a vertical shaft that allowed the device to rotate in plane while spin was transmitted to the propell
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.
Catalina Yachts is a U.S.-based builder of fiberglass monohull sloop-rigged sailboats ranging in sizes from eight to 54 feet in length. It was founded in 1969 in Hollywood, California by Frank Butler. [1] Catalina Yachts is one of the largest boat manufacturers in the world, with over 80,000 boats manufactured to date. [2]
The Zvezda M503 (built at AO Zvezda at St Petersburg) is a maritime 7 bank, 42 cylinder diesel radial engine built in the 1970s by the Soviet Union. Its primary use was in Soviet missile boats that used three of these engines.
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