A chart datum is the water surface serving as origin (or coordinate surface) of depths displayed on a nautical chart and for reporting and predicting tide...

the vertical geodetic datum accuracy of some offshore areas as represented on nautical charts, especially on small-scale charts. A similar incident involving...

In geodesy, surveying, hydrography and navigation, vertical datum or altimetric datum is a reference coordinate surface used for vertical positions, such...

An ordnance datum (OD) is a vertical datum used by an ordnance survey as the basis for deriving altitudes on maps. A spot height may be expressed as above...

global MSL is a type of vertical datum – a standardised geodetic datum – that is used, for example, as a chart datum in cartography and marine navigation...

geometric dimensioning and tolerancing Chart datum, level of water depth on a nautical chart Datum or datum point, a (possibly arbitrary) reference baseline...

Port Chart Datum in depth, a turning basin of 600 m in diameter and also at -18 m Port Chart Datum, 1 general cargo berth at -18 m Port Chart Datum, and...

1926, water levels ranged from 1.58 to 0.33 feet (0.48 to 0.10 m) below Chart Datum. In the summer of 2007 monthly historic lows were set; August at 0.66...

minor grid lines. A chart's data can appear in all manner of formats and may include individual textual labels describing the datum associated with the...

datum for hydrographic surveying and charting in the United Kingdom and Ireland. The following tidal and sea level surfaces are included: Chart Datum...

wharf. The deck height of the wharves is 7.6 metres (25 ft) above the chart datum or mean lower low water (MLLW). Each berth of these terminals will have...

86° 35' 52"W, on NOAA chart 14963, Grand Marais to Big Bay Point, scale 1:120,000, 2006. Chart datum (as shown on the chart) is 601.1 feet above mean...

at suitable scales. Admiralty charts include information on: depths (chart datum), coastline, buoyage, land and underwater contour lines, seabed composition...

below" is most often noted on charts as measured from the surface of the water to the underside of the bridge at the chart datum Mean High Water (MHW), a less...

berthing for vessels up to 360m long with a water depth of 10m below Chart datum, a ferry berth, and 6.5 hectares of land for unloading, storage and industrial...

7 in) below chart datum. Dry dock number two was 120 metres (390 ft) long, 18.6 metres (61 ft) wide and a had a depth below chart datum of 0.37 metres...

A geodetic datum or geodetic system (also: geodetic reference datum, geodetic reference system, or geodetic reference frame, or terrestrial reference frame)...

breakwater for berthing facilities, with an existing water depth of 6 m below chart datum. "2008 National Population and Housing Census: Preliminary Results" (PDF)...

the large geodetic systems, such as European Datum (ED50), North American Datum (NAD), and Tokyo Datum (TD), to provide a worldwide geo-data basis Need...

Michigan is held by the state in trust for public use. Wetlands portal Chart datum Mean high water Measuring storm surge Terrace (geology), benches left...

simply sequences of symbols that may be further interpreted formally. A datum is an individual value in a collection of data. Data are usually organized...

period, water levels ranged from 1.38 to 0.71 feet (42–22 cm) below Chart Datum. The all-time low-water mark was eclipsed in January 2013. In January...

Additional parameters are sometimes added: The height of the light above the chart datum for height (usually based on high water). e.g. "15m" for 15 metres. The...

period, water levels ranged from 1.38 to 0.71 feet (42–22 cm) below Chart Datum. The all-time low-water mark was eclipsed in January 2013. Lake Huron...

animal Latitude, a geo-coodinate Lowest astronomical tide, a nautical chart datum Los Angeles Times, an American newspaper LAT TV, Texas and Arizona, US...

noon and that the water level at this time would be two metres above chart datum, and that at the following high tide the water level would be 14 metres...

system for measuring elevation using vertical datums, based on levelling, a geoid model, or a chart datum (considering tides). These standards acknowledge...

harbour. The approach channel has a depth of 19.20 metres (63.0 ft) below chart datum and 20.2 metres (66 ft) below Sea level (MSL), and a minimum width of...

are relative to a "chart datum", which is typically the water level at the lowest possible astronomical tide (although other datums are commonly used,...

water depth of 10.15m below chart datum. The access channel to the port provides ship a water depth of 14.95m below chart datum and a channel width between...