NOAA Raster Navigational Charts - 13241 - Nantucket Island MA
- NOAA nautical charts are a graphic representation of a maritime area and adjacent coastal regions. Depending on the scale of the chart, it may show depths of water and heights of land (topographic map), natural features of the seabed, details of the coastline, navigational hazards, locations man-made aids to navigation, information on tides and currents, local details of the Earth's magnetic field, and man-made structures such as harbors, buildings and bridges. Taken from http://nauticalcharts.noaa.gov/mcd/Raster/index.htm. OVERVIEW: In the United States, all official nautical paper charts produced by NOAA's Office of Coast Survey (OCS) are available in raster format. A fundamental tool of marine navigation, NOAA's Raster Navigational Charts (NOAA RNCs TM) are produced by scanning at high resolution the original color separates, which are used to print the paper charts. NOAA adds to the digital raster file such features as data describing the chart, its datum, projection, and its geo-reference. Geo-referencing enables a computer-based navigation system that is connected to a GPS to locate and display on the chart image on screen the vessel's exact position.
- National Oceanographic and Atmospheric Administration, Office of Coast Survey
- Massachusetts and Gulf of Maine
- chart, navigational chart, NOAA, National Oceanographic and Atmospheric Administion, OCS, Office of Coast Survey, and navigation
- Held by
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