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	Eng ID	Term	Definition
	661	cartographer	Person employed in drawing and constructing CHARTS or MAPS.
	662	cartography	The art and science of expressing graphically, by MAPS and CHARTS, the known physical features of the EARTH, or of another CELESTIAL BODY. O... more The art and science of expressing graphically, by MAPS and CHARTS, the known physical features of the EARTH, or of another CELESTIAL BODY. Often includes the works of man and his varied activities.
	663	cartouche	A panel on a MAP, often with decoration, enclosing the TITLE or other LEGENDS, the SCALE, etc.
	664	Cassini projection	See PROJECTION.
	665	cast	In OCEANOGRAPHY, a single lowering of a series of WATER BOTTLES or other oceanographic instruments at an OCEANOGRAPHIC STATION. Also referre... more In OCEANOGRAPHY, a single lowering of a series of WATER BOTTLES or other oceanographic instruments at an OCEANOGRAPHIC STATION. Also referred to as oceanographic cast.
	666	catenary	The curve formed by a uniform CABLE, CHAIN, or TAPE supported only at its ends.
	667	catenary correction (tape)	See TAPE: SAG CORRECTION.
	668	cathode-ray tube	A vaccum tube in which electrons emitted by a hot cathode are formed into a narrow BEAM, accelerated at high VELOCITY and directed towards a... more A vaccum tube in which electrons emitted by a hot cathode are formed into a narrow BEAM, accelerated at high VELOCITY and directed towards a specially prepared SCREEN which fluoresces at the point where the electrons strike.
	669	catoptric light	See LIGHT.
	670	causeway	A raised way across low or wet GROUND or water.
	671	caution area	An area to which a CAUTIONARY NOTE applies where the mariner needs to be aware of special circumstances influencing the safety of NAVIGATION... more An area to which a CAUTIONARY NOTE applies where the mariner needs to be aware of special circumstances influencing the safety of NAVIGATION.
	672	cautionary (or caution) note	Information calling special attention to some fact, usually a DANGER AREA shown on a CHART, or other publication.
	673	cavitation	The turbulent formation, generally mechanically induced, including growth and collapse of bubbles in a fluid, and occurring when the static ... more The turbulent formation, generally mechanically induced, including growth and collapse of bubbles in a fluid, and occurring when the static pressure at any point in fluid flow is less than fluid vapour pressure.
	674	cay (also kay, key)	A low, flat ISLAND of SAND, CORAL, etc. awash or drying at LOW WATER; a term originally applied to the coral islets around the COAST and ISL... more A low, flat ISLAND of SAND, CORAL, etc. awash or drying at LOW WATER; a term originally applied to the coral islets around the COAST and ISLANDS of Caribbean Sea.
	675	ceiling	See HEIGHT OF CLOUD BASE.
	676	celestial body	Any body pertaining to the heavens, constituting a unit for astronomical study, such as the SUN, the MOON, the PLANETS, FIXED STARS, COMETS,... more Any body pertaining to the heavens, constituting a unit for astronomical study, such as the SUN, the MOON, the PLANETS, FIXED STARS, COMETS, etc. Also called heavenly body.
	677	celestial concave	See CELESTIAL SPHERE.
	678	celestial coordinates	See COORDINATES.
	679	celestial equator	See EQUATOR.
	680	celestial equator system of coordinates	A set of CELESTIAL COORDINATES based on the CELESTIAL EQUATOR as the PRIMARY GREAT CIRCLE. Usually DECLINATION, RIGHT ASCENSION and HOUR ANG... more A set of CELESTIAL COORDINATES based on the CELESTIAL EQUATOR as the PRIMARY GREAT CIRCLE. Usually DECLINATION, RIGHT ASCENSION and HOUR ANGLE, or SIDEREAL HOUR ANGLE. Also called equinoctial system of coordinates.
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