Skin girth

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Skin girth is a measurement of a yacht hull.

Skin girth is specified in some design rules to handicap or match the capabilities of sailing vessels of similar design such as the 12 meter boats. Skin girth is measured by following the surface of the hull from a given elevation on the hull vertically from a specified fore-and-aft position. It differs from the chain girth which is measured as a straight line between two specified points.