RNC NOAA Chart

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Raster Navigational Charts are created by the National Oceanic and Atmospheric Administration (NOAA) of the United States Government. Each original chart is scanned at high resolution with color separate overlays. The raster file also contains data that is Geo-referencing that enables computer based navigation attached to a GPS to locate and display the chart.

The charts are stored in BSB file format. Image manipulation tools such as GDAL can read the image information, but there also is georeferenced data in the navigational charts.

[edit] External links

• Example Chart 13267 Massachusetts Bay

• US patent 5727090, "Method of storing raster image in run lengths havng variable numbers of bytes and medium with raster image thus stored", granted 1998-03-10, assigned to United States of America as represented by the Secretary of Commerce