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| A weighted fin that, when attached to the bottom of a sailboat, keeps the boat from capsizing or slipping sidewaysin the water, which allows it to sail upwind. |
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| A sailboat without a keel may have a centerboard. A centerboard is a metal or wodden fin housed in a centerboard trunk. It can be lowered to overcome the boats lateral motion. |
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| The maximum width of the hull |
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| The horizontal upper surface of the boat |
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| The fin at the stern of the boat used for steering |
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| The wooden or metal steering arm attached to the rudder. It is used as a lever to turn. |
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| A wooden or metal pivoting extenstion attached to the tiller. It is usaully found on dinghies and enables the skipper to sterr accuratley while hiking out. |
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| On lager boats the wheel replaces the tillerand is used to turn the rudder |
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| The vertical pole or spar that supports the the sails and boom. The top of the mast is called the masthead. |
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| The horizontal spar which is attached to the mast to support the bottom part of the mainsail. |
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| leaning the weight of the crew ovwer the windward side to help keep the boat on an "even keel." |
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| Left side of the boat as you face forward |
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| The right side of the boat as you face forward. |
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| The line used to make major adjustments to the mainsail. |
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| An adjustable tackle or rod that preventsthe boom from lifting. A rod type Vang also keeps the boom from dropping on the deck. |
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| Plastic coated wires enclosing the deck to keep the crew from failing overboard. Lifelines are suspended from metal supports, called pulpits and stanchions. |
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| A slide, running across the boat, to which the mainsheet is led. the crew can change the trim of the mainsailby adjusting the slide position. |
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| The sides of the hullabove the waterline. |
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| A collection of wires that supports the mast. On more sophisticated boats, the standing rigging is more complex and can be adjusted to optimize a sail's performance. |
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| A wire that runs from the top of the mast (or near the masthead) to the bow and onto which the jib is attached. It supports the mast, preventing it from failing backwards. |
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| A wire that runs from the top of the mast to the stern and supports the mast. |
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| Wires that run from the masthead (or near the masthead) to the sides off the boat to support the mast and prevent it from swaying |
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| The power supply of the sailboat. They are most frequently made of dacron, a synthetic fiber, used because of it resistence to streching. |
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| The primary sail and most easily conttrolled source of power, attachedto the aft edge of the mast and the topp edge of the boom. |
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| A ballon like sail, often colored, used when running. |
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| The sail set forward of the mainsail and attached to the forestay using jib hanks or a headfoil track for a bolt rope. |
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| A large jib with a overlap aft of the mast. |
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| The top corner of the sail |
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| The forward lower corner of the sail |
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| The back lower corner of a sail |
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| The leading edge (front) of a sail. The luff of a mainsail attaches to the mast, and the luff of the jib attaches to the forestay. |
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| The bottom edge of a sail. The foot of the mainsail attaches to the boom. The foot of the jib is unattched and consequently more difficult to control. |
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| The trailing edge (back) of a sail. |
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| Support sticks held in pockets to keep the leech from flapping and to add support to the sail. |
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| The fullness or roundness of a sail. |
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| Consists of ropes (called lines) that poll the sails up and adjust the sails shape. Unlike the standing rigging, the running rigging is not stationary |
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| lines used to raise (hoist) sails and hold them up. |
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| A line used to trim the mainsail; it is led through a series of blocks to form a block and tackle. |
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| Two lines, one on each side of the boat, to trim the jib. |
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| Prevents the boom from dropping on the deck. |
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| A wooden, plastic, or metal fitting used to secure lines. |
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| The fitting that attaches the boom to the mast. |
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| If the headstay has a groove, |
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| Use crew weight and sail trim and very little rudder to change the course of the boat. |
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| Actual dirsection and speed the wind is blowing over the water. |
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| A product of the the true wind and your relative wind due to your motion. |
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| Center of Lateral Resistance. |
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| The point on the centerboard, keel, or hull under the water that acys like a pivot pointfor the whole area of lateral resistance. One half of the lateral resistance is to one side and the other half is to the opposite. Like the pivot on a teeter totter. |
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| Acts like a pivot for the sails. |
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| Steering away frm the wind. (let sails out) |
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| The point of the sail is closest to the wind. |
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| Sailing the same direction as the wind. |
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| Reaching at 90 degrees from the wind |
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| Sailing directly into the wind |
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| Running with the mainsheet on the same side of the boat. |
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