An outhaul is a line which is part of the running rigging of a sailboat, which is used to extend a sail, and control the shape of the curve of the foot of the sail. Running rigging is the term for the Rigging of a sailing vessel that is used for raising lowering and controlling the Sails - as opposed to the Standing In some cases less is more The purpose of this article is to give an overview A sail is any type of surface intended to generate Thrust by being placed in a Wind &mdashin essence a vertically-oriented Wing. In Sailing the parts of a Sail have common terminology for each corner and edge of the sail It runs from the clew (the back corner of the sail) to the end of the boom. In Sailing the parts of a Sail have common terminology for each corner and edge of the sail In Sailing, a boom is a Spar (pole along the foot (bottom of a Fore and aft rigged Sail, that greatly improves control of the angle The line is pulled taut to the appropriate tension (to provide the desired shape to the foot), and then secured to a cleat on the boom. In Physics String Tension is the magnitude of the pulling force exerted by a string cable chain or similar object on another object
The details vary, but the two most common methods are:
- A knot, usually a bowline, is tied to a grommet provided for the purpose in the clew of the sail, then fed directly to the cleat. The bowline ( or /ˈboʊlaɪn/ is an ancient but simple Knot used to form a fixed loop at the end of a rope Grommets and eyelets are Metal, Plastic, or Rubber rings that are inserted into a hole made through another material
- The line is attached to the boom, lead through the same grommet, and thence to a cleat; this system provides a factor of two mechanical advantage over the previous one. In Physics and Engineering, mechanical advantage (MA is the factor by which a mechanism multiplies the force put into it
The outhaul, besides simply holding the sail out, is an effective sail shape control. Tightening or slackening the outhaul can flatten or fill out the sail, shift the draft forward or aft, change leech and foot tension, increase or decrease camber. In nautical parlance the draft or draught of a Sail is a degree of Curvature in a horizontal cross-section For the acronym see AFT. Aft, in naval Terminology, is an Adjective or Adverb meaning 'towards In Sailing the parts of a Sail have common terminology for each corner and edge of the sail In Sailing the parts of a Sail have common terminology for each corner and edge of the sail
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