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Total record count: 6269.

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	Eng ID	Term	Definition
	4601	seagrass	Any grasslike marine ALGA. Eelgrass is one of the best known seagrasses.
	4602	sea ice	Any form of ICE which has originated from SEA WATER. Generally, any ICE in the SEA.
	4603	sea level	The height of the sea surface uninfluenced by wind waves and swell, which is frequently measured relative to a reference horizon. Observatio... more The height of the sea surface uninfluenced by wind waves and swell, which is frequently measured relative to a reference horizon. Observations of the sea level over a certain period are often evaluated to render minimum, maximum, and mean sea level.
	4604	sea level datum	A determination of MEAN SEA LEVEL that has been adopted as a standard DATUM of HEIGHTS although it may differ from a later determination o... more A determination of MEAN SEA LEVEL that has been adopted as a standard DATUM of HEIGHTS although it may differ from a later determination over a longer period of time.
	4605	seamanship	A general term for the art by which vessels are handled.
	4606	seamark	An AID TO NAVIGATION located with the express purpose of being visible from a distance to SEAWARD. Often erected in shoal water rather than... more An AID TO NAVIGATION located with the express purpose of being visible from a distance to SEAWARD. Often erected in shoal water rather than on LAND.
	4607	sea mile	The length of one MINUTE of arc, measured along the MERIDIAN in the LATITUDE of the POSITION; its length varies both with the LATITUDE and w... more The length of one MINUTE of arc, measured along the MERIDIAN in the LATITUDE of the POSITION; its length varies both with the LATITUDE and with the FIGURE OF THE EARTH in use. Used in NAVIGATION to measure distances on sea charts using the MERCATOR PROJECTION. Not to be confused with NAUTICAL MILE or INTERNATIONAL NAUTICAL MILE.
	4608	sea moat	See MOAT.
	4609	seamount (or peak)	An isolated or comparatively isolated ELEVATION rising 1 000 METRES or more from the SEAFLOOR and of limited extent across the SUMMIT.
	4610	seamount chain	Several SEAMOUNTS in a line with bases separated by a relatively flat SEAFLOOR.
	4611	seamount group	Several closely spaced SEAMOUNTS not in a line.
	4612	seamount range	Several SEAMOUNTS having connected bases and aligned along a RIDGE or RISE.
	4613	seaport	A PORT on or near the SEA and readily accessible to seagoing vessels.
	4614	sea reach	The straight part of a RIVER between the last bend and the SEA.
	4615	sea scarp	See ESCARPMENT.
	4616	seashore	The SHORE of a SEA or OCEAN.
	4617	seasonal current	See CURRENT.
	4618	sea state	Numerical scale of the average surface WAVE HEIGHT as defined by the WMO code. Also called state of the sea.
	4619	sea valley	See VALLEY.
	4620	sea wall	An EMBANKMENT or wall for protection against WAVES or tidal action along a SHORE or WATER FRONT.
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