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	Eng ID	Term	Definition
	601	cable length	See CABLE.
	602	cable sign	A sign on a post marking the point from which a cable runs under water.
	603	C/A Code	The standard (Coarse/Acquisition, or Clear/Access) GPS code; a sequence of 1023 pseudo-random binary biphase modulations on the GPS carrier ... more The standard (Coarse/Acquisition, or Clear/Access) GPS code; a sequence of 1023 pseudo-random binary biphase modulations on the GPS carrier at a chip rate of 1.023 MHz, thus having a code repetition period of one millisecond. See also P-CODE.
	604	cadastral map	See MAP.
	605	cadastral survey	See SURVEY.
	606	cadastre	A public record of the extent, value, and ownership of LAND for purposes of taxation.
	607	cairn	A mound of STONES, usually conical or pyramidal, raised as a LANDMARK or to designate a point of importance in SURVEYING.
	608	caisson	A steel structure used for closing the entrance of LOCKS, WET and DRY DOCKS. See also LOCK GATE.
	609	calcareous	(adj). Composed of or containing calcium or calcium carbonate.
	610	calculator	A machine for performing arithmetical operations usually more complex than that done by an adding machine; a calculating machine, which may ... more A machine for performing arithmetical operations usually more complex than that done by an adding machine; a calculating machine, which may be mechanical, electrical, electronic or a combination of all three. A person who calculates.
	611	calendar line	See DATE LINE.
	612	calibrate	(v.t.). To fix, check or correct the GRADUATIONS of a measuring instrument. To determine the calibre of.
	613	calibrated focal length	See FOCAL LENGTH.
	614	calibration	The act or process of determining certain specific measurements in an instrument or device by comparison with a STANDARD, for the purpose of... more The act or process of determining certain specific measurements in an instrument or device by comparison with a STANDARD, for the purpose of correcting or compensating ERRORS or for purposes of record.
	615	calibration: direct base	The calibration of a positioning system with the help of one or more baselines of known length, which is determined with an instrument havin... more The calibration of a positioning system with the help of one or more baselines of known length, which is determined with an instrument having an accuracy superior to that of the positioning system.
	616	calibration: direct simultaneous	The calibration of a positioning system at the same time when the distances used for calibration are measured using another system or instru... more The calibration of a positioning system at the same time when the distances used for calibration are measured using another system or instrument of superior accuracy.
	617	calibration: indirect position	The calibration of a positioning system using positions of the survey vessel at different locations which were determined independently of t... more The calibration of a positioning system using positions of the survey vessel at different locations which were determined independently of the positioning system. True distances can be derived from these positions and by comparison with the data rendered by the positioning system, calibration values can be deduced.
	618	calibration: indirect variation	The calibration of a positioning system by obtaining redundant observations so that calibration values can be deduced mathematically from th... more The calibration of a positioning system by obtaining redundant observations so that calibration values can be deduced mathematically from the discrepancies between uncalibrated values at different locations.
	619	calibration of compass	See SWINGING SHIP.
	620	calling-in point	A designated position at which vessels are required to report to a traffic control centre. Also called reporting point or radio reporting ... more A designated position at which vessels are required to report to a traffic control centre. Also called reporting point or radio reporting point.
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