The square sail set above the course sails (lowest), lower topsail, upper topsail, topgallant, royal and skysail of an extreme clipper.
Related Terms |
BOLTROPE
A strong rope stitched to edges of a sail
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PSID
pounds per square inch differential.
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HORIZON SYSTEM OF COORDINATES
A set of celestial coordinates based on the celestial horizon as the primary great circle; usually altitude and azimuth or azimuth angle.
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PSIG
pounds per square inch gauge (PSIA - 14.696).
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AUXILIARY CONTACTS
A set of contacts that perform a secondary function, usually in relation to the operation of a set of primary contacts.
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ATMOSPHERIC PRESSURE
Pressure exerted by the atmosphere at any specific location. (Sea level pressure is approximately 14.7 pounds per square inch absolute.)
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FORESAIL
The lowest sail set on the foremast of square-rigged ship
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FORESAIL
The lowest sail set on the foremast of square-rigged ship
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psia
pounds per square inch absolute.
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psi
pounds per square inch.
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