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	Eng ID	Term	Definition
	621	calling the soundings	Announcement made by LEADSMAN when heaving the LEAD.
	622	calm	WIND with a SPEED zero or less than 2 KNOTS (BEAUFORT SCALE wind force 0). The state of sea when there are no WAVES.
	623	calorie	A unit of quantity of heat, originally defined as the amount of heat required to raise the temperature of one GRAM of water through one DEGR... more A unit of quantity of heat, originally defined as the amount of heat required to raise the temperature of one GRAM of water through one DEGREE C. The 15-degree gram-calorie is the amount of heat required to raise the temperature of one GRAM of water from 14°.5 C to 15°.5 C, and is equal to 4.1855 JOULES.
	624	calving	The breaking away of a mass of ICE from a GLACIER, ICE FRONT, or ICEBERG.
	625	camber	A small BASIN, usually with a narrow ENTRANCE, situated inside a HARBOUR.
	626	camera	A lightproof chamber or box in which the IMAGES of exterior objects are projected upon a sensitized PLATE or film, through an opening usuall... more A lightproof chamber or box in which the IMAGES of exterior objects are projected upon a sensitized PLATE or film, through an opening usually equipped with a LENS or LENSES, SHUTTER and variable aperture.
	627	camera: aerial	A CAMERA specially designed for use in aircraft.
	628	camera: ballistic	A precision terrestrial camera usually employing glass plates, used at night to photograph such objects as ROCKETS or SATELLITES against a s... more A precision terrestrial camera usually employing glass plates, used at night to photograph such objects as ROCKETS or SATELLITES against a star background. If the CAMERA is mounted so that it tracks the STARS or the object, it may be called a tracking camera.
	629	camera: continuous-strip	A CAMERA in which a continuous-strip exposure is made by rolling the film continuously past a narrow slit opening at a SPEED proportional to... more A CAMERA in which a continuous-strip exposure is made by rolling the film continuously past a narrow slit opening at a SPEED proportional to the GROUND SPEED of the aircraft.
	630	camera: deep sea	A camera system specially designed for obtaining PHOTOGRAPHS of the ocean bottom.
	631	camera: multiple lens	A CAMERA with two or more LENSES, with the AXES of the LENSES systematically arranged at fixed angles in order to cover a wide field by simu... more A CAMERA with two or more LENSES, with the AXES of the LENSES systematically arranged at fixed angles in order to cover a wide field by simultaneous EXPOSURES in all chambers.
	632	camera: photogrammetric	A general term applicable to CAMERAS used in any of the several branches of PHOTOGRAMMETRY.
	633	camera: stereometric	A combination of two CAMERAS mounted with parallel OPTICAL AXES on a short rigid base; used in TERRESTRIAL PHOTOGRAMMETRY for making PHOTOGR... more A combination of two CAMERAS mounted with parallel OPTICAL AXES on a short rigid base; used in TERRESTRIAL PHOTOGRAMMETRY for making PHOTOGRAPHS in STEREOSCOPIC PAIRS.
	634	camera: surveying (or mapping)	A CAMERA specially designed for the production of PHOTOGRAPHS to be used in SURVEYING. The prefix 'mapping' or 'surveying' indicates that th... more A CAMERA specially designed for the production of PHOTOGRAPHS to be used in SURVEYING. The prefix 'mapping' or 'surveying' indicates that the CAMERA is equipped with means for maintaining and indicating the INTERIOR ORIENTATION of the PHOTOGRAPHS with sufficient ACCURACY for surveying purposes. A mapping camera may be an aerial mapping camera or a terrestrial mapping camera.
	635	camera: terrestrial	A CAMERA designed for use on the GROUND. See PHOTOTHEODOLITE.
	636	camera: tracking	See CAMERA: BALLISTIC.
	637	camera axis	See AXIS OF CAMERA.
	638	camera station	See AIR STATION.
	639	canal	An artificial WATERWAY with no FLOW, or a controlled flow, used for NAVIGATION or for draining or irrigating land (ditch).
	640	can buoy	A BUOY the above-water part of which is in the shape of a cylinder. Sometimes called cylindrical buoy.
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