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Velocity made good, or VMG, is a term used in sailing, especially in yacht racing, indicating the speed of a sailboat towards (or from) the direction of the wind. [1] [2] The concept is useful because a sailboat cannot sail directly upwind, and thus often can not, or should not, sail directly to a mark to reach it as quickly as possible.
All sailing craft reach a constant forward speed (V B) for a given wind speed (V T) and point of sail, when the forward driving force (F R) equals the forward resisting force (R l). [8] For an ice boat, the dominant forward resisting force is aerodynamic, since the coefficient of friction on smooth ice is as low as 0.02. Accordingly, high ...
Formula Kite is the kitesurfing class chosen by World Sailing for the 2024 Summer Olympics. [2] [3] The class features a foil kite and a board with a hydrofoil. The equipment is not one-design, but instead competitors use their choice of approved production equipment. [4] The International Kiteboarding Association (IKA) manages the class. The ...
The Formula 18 World Championship and the Formula 18 Raid World Championship also known as the F18 World Championship and Raid F18 Worlds is an annual international sailing regatta for Formula 18, organized by the host club on behalf of the International Formula 18 Class Association and recognized by World Sailing, the sports IOC recognized governing body.
Hull speed can be calculated by the following formula: where is the length of the waterline in feet, and is the hull speed of the vessel in knots. If the length of waterline is given in metres and desired hull speed in knots, the coefficient is 2.43 kn·m −½.
In sailing, apparent wind is the speed and direction of wind indicated by a wind instrument on a moving craft (on water, land or ice) in undisturbed air. It is composed of the combined speeds and directions of the craft and wind observed by a stationary wind instrument—the true wind.
The sport of sailing involves a variety of competitive sailing formats that are sanctioned through various sailing federations and yacht clubs. Racing disciplines include matches within a fleet of sailing craft, between a pair thereof or among teams. Additionally, there are specialized competitions that include setting speed records.
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 ...