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Total record count: 6269.

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	Eng ID	Term	Definition
	561	broadcast ephemeris	Ephemeris transmitted by a satellite which describes its position and orbital parameters.
	562	broadside on	Beam on, as to the wind or sea.
	563	broken telescope transit	See TRANSIT.
	564	broken water	An area of small WAVES and EDDIES occurring in what otherwise is a calm SEA.
	565	brook	A small STREAM; a RIVULET. Also called run.
	566	bubble: spirit (or sensitive)	See LEVEL: SPIRIT.
	567	bubble sextant	See SEXTANT.
	568	bucket temperature	Temperature of surface sea water trapped and measured in a bucket or similar receptacle.
	569	bulkhead	On land, a structure or partition built to retain or prevent sliding of the land. A secondary purpose is to protect the upland against damag... more On land, a structure or partition built to retain or prevent sliding of the land. A secondary purpose is to protect the upland against damage from wave action. Bulkheads are frequently backfilled thereby increasing the utility of the adjacent land area.
	570	bull's eye level	See LEVEL: SPIRIT.
	571	buoy	A floating object moored to the BOTTOM in a particular (charted) place, as an AID TO NAVIGATION or for other specific purposes. Navigational... more A floating object moored to the BOTTOM in a particular (charted) place, as an AID TO NAVIGATION or for other specific purposes. Navigational buoys may be classified according to: (a) their shape, appearance, or construction, such as barrel, CAN, cask, CONICAL, cylindrical, DAN, KEG, NUN, PILLAR, SPAR, spherical, or TOPMARK BUOY; (b) their colour, such as black, chequered, green, red buoy; (c) their location, such as BIFURCATION, FAIRWAY, JUNCTION, MID-CHANNEL, MIDDLE-GROUND, or TURNING BUOY; (d) the various kinds of hazards or dangers to NAVIGATION which they mark, such as BAR, ISOLATED DANGER, FISH TRAP, OBSTRUCTION, SPOIL GROUND, TELEGRAPH or WRECK BUOY; (e) their particular purpose or use, such as ANCHOR, ANCHORAGE, COMPASS ADJUSTMENT, DREDGING, FAREWELL (or landfall), MARKER, QUARANTINE, STATION (or watch), or WARPING BUOY.
	572	buoy: automatic	See AUTOMATIC FLOATING STATION.
	573	buoy: bifurcation	A distinctive lateral BUOY used to indicate both the point at which a channel divides and the channel that has been designated as preferred ... more A distinctive lateral BUOY used to indicate both the point at which a channel divides and the channel that has been designated as preferred channel.
	574	buoy: cable	A BUOY used to indicate the run of a SUBMARINE CABLE.
	575	buoy: cardinal	A BUOY used to indicate that the best navigable water is to be found in one particular of the quadrants that are bounded by the four bearing... more A BUOY used to indicate that the best navigable water is to be found in one particular of the quadrants that are bounded by the four bearings NW, NE, SE and SW taken from the position of the mark.
	576	buoy: fairway	A BUOY intended to be the first to be seen during an approach from the open sea to a FAIRWAY.
	577	buoy: lateral	A BUOY used to indicate a lateral limit of NAVIGABLE water.
	578	buoy: life	A BUOY intended to keep persons afloat. Also called life jacket.
	579	buoy: light (or lighted)	A BUOY with a LIGHT having definite characteristics for detection and identification during darkness. See CHARACTERISTICS OF LIGHT.
	580	buoy: lighted sound	A LIGHT BUOY provided with a SOUND SIGNAL.
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