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From Wikipedia, the free encyclopedia

Influence of mainsail draft position on forward and side force
Influence of mainsail draft position on forward and side force

In nautical parlance, the draft or draught of a sail is a degree of curvature in a horizontal cross-section.[1] Any sail experiences a force from the prevailing wind just because it impedes the air's passage. A sail with draft also functions as an airfoil when set at an angle slightly greater than the angle of the wind, producing lift which then propels.

The word "belly" is also used in reference to the draft of a sail (i.e. "More belly in the main sail.").

See also


  1. ^ Barrie Smith; Jeremy Evans; Pat Manley (5 August 2013). The Sailing Bible: The Complete Guide for All Sailors from Novice to Experienced Skipper. Bloomsbury Publishing. pp. 83–. ISBN 978-1-4729-0157-6.
This page was last edited on 31 October 2019, at 23:03
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