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Lateral resistance

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lateral resistance - The ability of a boat to keep from being moved sideways by the wind. Keels, daggerboards, centerboards, and leeboards are all used to improve a boat's lateral resistance.

 


Lateral Resistance - The resistance a vessel offers to being pressed broadside on through the water. This resistance is assumed to be governed by the area of the plane bounded by the waterline, stem, keel, and rudder.

Center of Lateral Resistance (CLR) - Center point of all underwater area of the hull where the hull's lateral resistance can be said to be centered.

CENTER OF LATERAL RESISTANCE The point through which a single force could act and produce an effort equal to the lateral resistance of the vessel.

Centerboard - A movable or sliding keel formed of a broad board or slab of wood or metal which may be raised into a water-tight case amidships, when in shallow water, or may be lowered to increase the area of lateral resistance and prevent leeway ...

A Norwegian praam with a boilerplate centerboard, combining ballast and lateral resistance, and carrying a big sail, was built in 1878 at Shankhill. She was christened Cesmiostama, and proved an ideal boat.

The centres of effort and of lateral resistance have not the same longitudinal position, consequently a horizontal couple is produced which turns the vessel either into the wind or away from it.

In the kayak, the amount of the exposure of the skeg to the water; therefore of its effect on the position of the boat's centre of lateral resistance (c.l.r.) is freely variable by the crew.

A fin under a sailboat's hull providing weight for stability and lateral resistance to leeway. It consists largely of ballast. Unlike centerboards, most keels are fixed in place and not retractable (the exception is the lifting keel).

King puts a lot of stock in a boat's sea motion and balance under sail, however, and claims that if the ends are too asymmetrical and the trailing edge of the keel is too far forward, the center of lateral resistance will shift and destroy upwind ...

DAGGERBOARD-KEEL-Heavy, board-like surface used to provide lateral resistance to the water, raised and lowered vertically.
DEAD RECKONING-Determining a vessel's position by the course sailed and the distance covered.

centerboard
board or metal plate that extends down into the water from the middle of the hull to add lateral resistance and slow the boat's sideways motion through the water
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The weighted board that is lowered through a slot in the bottom to reduce leeway and provide lateral resistance.
Centerboard cable
A 5/32"cable that winds onto the shaft of the centerboard winch to raise the centerboard.

Keel: The fin under the hull, which is used for stability and lateral resistance. A Keel Boat is any boat with a Keel.
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slipping sideways a main structural member, the backbone of the ship running longitudinally along the bottom from stem to stern; also the vertical downward extension of a sailboat's bottom, usually ballasted, for stability and lateral resistance.

centerboard A metal plate (or board), moving vertically (or pivoting up & down) in the slot of the keel; the purpose is to add lateral resistance to a sailboat's hull.

Keel: The major structural member in a traditional wooden vessel, to which the frames, transom, stem, and lower-most planks are fastened. By extension, the meaning refers to a lengthwise fin under the hull used to provide lateral resistance when ...

Centre of lateral resistance: The epicentre of a boats ability to resist leeway.
Centre line: Imaginary line running the length of a boat at the centre.
Chief Mate: The officer second in command of a ship.

  The point at which the wind force acts on the sails is called the center of effort (c.o.e.) and the average point at which the water resists is called the center of lateral resistance (c.l.r.). When the c.o.e. is directly above the c.l.r.

so that they lie together and form an eye when in use sister ship Another ship of similar class, line, design, or name skeg A triangular, vertical projection below the after end of a boat's keel, designed to increase the boat's lateral resistance and ...

KEEL - The main structural member of a hull (backbone): underwater extension of hull to increase lateral resistance and stability.
KNOT - A nautical mile-per-hour measure of speed. A nautical mile is approximately 6076 feed.

(See LEE and WEATHER HELM) CENTER OF LATERAL RESISTANCE (CLR) The geometric center or pivot point of the underwater hull profile. CHAINPLATE A metal strap to which shrouds or fittings are attached.

See also: Boat, Hull, Wind, Keel, Point