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	Eng ID	Term	Definition
	4881	sounding: formation	SOUNDING carried out by two or more ships in formation searching for a reported danger.
	4882	sounding: hand lead	SOUNDING with HAND LEAD. Hand lead soundings are usually taken from a slowly moving vessel.
	4883	sounding: line of	See LINE OF SOUNDING.
	4884	sounding(s): minus	(U.S. terminology). SOUNDINGS that reduce to HEIGHT above the SOUNDING DATUM (plane of reference) when corrected for HEIGHT OF TIDE. Minus s... more (U.S. terminology). SOUNDINGS that reduce to HEIGHT above the SOUNDING DATUM (plane of reference) when corrected for HEIGHT OF TIDE. Minus soundings are shown on the SMOOTH SHEET preceded by a minus sign.
	4885	sounding(s): no bottom	(U.S. terminology). SOUNDINGS where the BOTTOM was not reached because the general DEPTHS were too great for the method of measurement.
	4886	sounding: wire	SOUNDING with a SOUNDING MACHINE. To obtain a vertical wire sounding the ship or boat must be stopped while the wire is running out.
	4887	sounding(s): zero	(U.S. terminology). SOUNDINGS that reduce to HEIGHTS above the SOUNDING DATUM but shown on the SMOOTH SHEET as zero soundings regardless of ... more (U.S. terminology). SOUNDINGS that reduce to HEIGHTS above the SOUNDING DATUM but shown on the SMOOTH SHEET as zero soundings regardless of HEIGHT. A practice now discontinued. See SOUNDING: MINUS.
	4888	sounding apparatus	Any apparatus designed for use in measuring the DEPTH of water.
	4889	sounding board	See FIELD BOARD.
	4890	sounding book	See SOUNDING RECORD.
	4891	sounding bottle	A strong metal container fitted with non-return valves for taking WATER SAMPLES at great DEPTHS. See also WATER BOTTLE.
	4892	sounding datum	See DATUM.
	4893	sounding interval	The interval between successive SOUNDINGS along a LINE OF SOUNDING. See DENSITY OF SOUNDINGS.
	4894	sounding lead	A LEAD used for determining DEPTH of water. Also referred to as plummet.
	4895	sounding line	A LINE OF SOUNDING. A LEAD LINE.
	4896	sounding machine	An instrument for measuring DEPTH of water, consisting essentially of a reel of wire to one end of which is attached a WEIGHT which carries ... more An instrument for measuring DEPTH of water, consisting essentially of a reel of wire to one end of which is attached a WEIGHT which carries a device for recording the DEPTH. A crank or motor is provided for reeling in the wire.
	4897	sounding mark	(British terminology). A MARK erected for CONTROL of SOUNDING; its POSITION is determined by plotting using INTERSECTIONS from sextant FIXES... more (British terminology). A MARK erected for CONTROL of SOUNDING; its POSITION is determined by plotting using INTERSECTIONS from sextant FIXES.
	4898	sounding pole	A graduated pole or rod used for SOUNDING in SHALLOW WATER. Also called sounding rod.
	4899	sounding record	Bound record book in which all of the DATA taken on a HYDROGRAPHIC SURVEY are entered, and become part of the permanent records of the SURV... more Bound record book in which all of the DATA taken on a HYDROGRAPHIC SURVEY are entered, and become part of the permanent records of the SURVEY. Also called sounding book.
	4900	sounding rod	See SOUNDING POLE.
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