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  2. Construction estimating software - Wikipedia

    en.wikipedia.org/wiki/Construction_estimating...

    A cost estimator will typically use estimating software to estimate their bid price for a project, which will ultimately become part of a resulting construction contract. Some architects, engineers, construction managers, and others may also use cost estimating software to prepare cost estimates for purposes other than bidding such as budgeting ...

  3. Forces on sails - Wikipedia

    en.wikipedia.org/wiki/Forces_on_sails

    Sails are classified as "triangular sails", "quadrilateral fore-and-aft sails" (gaff-rigged, etc.), and "square sails". [38] The top of a triangular sail, the head , is raised by a halyard , The forward lower corner of the sail, the tack , is shackled to a fixed point on the boat in a manner to allow pivoting about that point—either on a mast ...

  4. Square rig - Wikipedia

    en.wikipedia.org/wiki/Square_rig

    Square rig is a generic type of sail and rigging arrangement in which the primary driving sails are carried on horizontal spars which are perpendicular, or square, to the keel of the vessel and to the masts. These spars are called yards and their tips, outside the lifts, are called the yardarms. [1] A ship mainly rigged so is called a square ...

  5. Building estimator - Wikipedia

    en.wikipedia.org/wiki/Building_estimator

    A building estimator or cost estimator is an individual that quantifies the materials, labor, and equipment needed to complete a construction project. Building cost estimating can concern diverse forms of construction from residential properties to hi-rise and civil works.

  6. Asymmetrical spinnaker - Wikipedia

    en.wikipedia.org/wiki/Asymmetrical_spinnaker

    An optional adjustable tack-line can be eased to allow the tack to lift, enabling the sail to also lift and its shoulders to rotate for deeper downwind angles. Depending on the design and size of the boat, sail and position of the tack, asymmetrical spinnaker sheets may be led to pass between the spinnaker and the headstay or, alternatively ...

  7. Square (sailing) - Wikipedia

    en.wikipedia.org/wiki/Square_(sailing)

    A term peculiarly appropriated to the yards and their sails. Thus, when the yards hang at right angles with the mast they are said to be 'square by the lifts;' when perpendicular to the ship's length, they are 'square by the braces;' but when they lie in a direction perpendicular to the plane of the keel, they are 'square by the lifts and braces.'

  8. Barquentine - Wikipedia

    en.wikipedia.org/wiki/Barquentine

    Painting of Mercator by Yasmina. City of New York, an arctic sailing ship.; Concordia, a sail training ship that capsized and sank on 17 February 2010.; KRI Dewaruci of Indonesian Navy, launched and commissioned in 1953, a well-known tall ship used for cadet training and ambassador of the sea, sails around the world and visits many countries.

  9. Wing and wing - Wikipedia

    en.wikipedia.org/wiki/Wing_and_wing

    Goosewinged sailing. Wing and wing, [1] Wing on wing, [2] Goosewinging [3] or Goosewinged, [4] is a term used to define, in a fore-and-aft-rigged sailboat, the way to navigate sailing directly downwind, with the mainsail and the foresail extended outwards on opposite sides of the boat, forming a 180º angle, to maximize the projected area of sail exposed to the wind.

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