English

Appearance

View mode
Number of cards in a row Here you can select the number of cards to be placed in a row for each of supported screen resolutions. Your current resolution is highlighted in this way.
	Large desktop
	Desktop
	Tablet
	Phone

Page size

Total record count: 6269.

Records per page

Use the “Quick Search” box to locate your required term and/or definition. The following “Search conditions” can be used to refine your search: “Contains”, “Begins with”, “Ends with”, “Equals”, “Does not contain” or “Does not equal.”

	Eng ID	Term	Definition
	201	apogean tide(s)	See under TIDE.
	202	apogee	That orbital point farthest from the EARTH when the EARTH is the centre of attraction, as opposed to PERIGEE.
	203	apparent altitude	See ALTITUDE: APPARENT.
	204	apparent horizon	See HORIZON.
	205	apparent motion	See RELATIVE MOTION.
	206	apparent noon	See NOON.
	207	apparent position	See POSITION.
	208	apparent precession	Apparent change in the direction of the axis of rotation of a spinning body, as a GYROSCOPE, due to the ROTATION of the EARTH.
	209	apparent shoreline	The seaward limit of marine vegetation, such as mangrove, marsh grass, or trees in water that would reasonably appear to the mariner from a ... more The seaward limit of marine vegetation, such as mangrove, marsh grass, or trees in water that would reasonably appear to the mariner from a distance to be the fast shoreline. The seaward limit of kelp, low grass in water, and other low‑lying vegetation normally does not constitute an apparent shoreline. A line drawn on the chart in lieu of the mean high water line or the mean water level line in areas where either may be obscured by marsh, mangrove, cypress, or other type of marine vegetation. This line represents the intersection of the appropriate datum with the outer limits of vegetation and appears to the navigator as shoreline.
	210	apparent solar day	See DAY: SOLAR.
	211	apparent solar time	See TIME.
	212	apparent sun	See SUN.
	213	apparent time	See TIME: APPARENT SOLAR.
	214	apparent wind	See RELATIVE WIND.
	215	approximate position	A position that is considered to be less than third-order accuracy, but is generally considered to be within 100 feet (30.5 metres) of its c... more A position that is considered to be less than third-order accuracy, but is generally considered to be within 100 feet (30.5 metres) of its correct geographic location. The method of location may be an indication of the recorded accuracy.
	216	apron	1. A gently dipping featureless surface, underlain primarily by SEDIMENT, at the base of any steeper SLOPE. 2. The area of wharf or quay f... more 1. A gently dipping featureless surface, underlain primarily by SEDIMENT, at the base of any steeper SLOPE. 2. The area of wharf or quay for handling cargo. 3. A sloping underwater extension of an iceberg. 4. An outwash plain along the front of a glacier.
	217	apsis	(pl. apsides) See LINE OF APSIDES.
	218	aquaculture	The cultivation of aquatic fauna and flora.
	219	arc: astronomical	The apparent arc described above (diurnal arc) or below (nocturnal arc) the HORIZON by the SUN or another CELESTIAL BODY.
	220	archipelagic apron	A gentle SLOPE with a generally smooth surface of the SEAFLOOR, characteristically found around groups of ISLANDS or SEAMOUNTS.
There are no records to display