The U.S. Coast Pilot, the supplement to raster navigational charts (NOAA RNC®) and electronic navigational charts (NOAA ENC®), now provides geotagged reference points. A geotag is simply geographical location information assigned to a type of media. In this case, a geotag conveniently assists mariners with landmark positions and displays the associated nautical chart inset in the HTML version of Coast Pilot. Currently, 75 percent of the nine Coast Pilot volumes have been geotagged, with more points available each week to the mariner. Coast Pilot is updated and available for download weekly, and can easily be used on mobile devices such as smart phones and tablets. To access the geotags, select a Coast Pilot book and click the HTML hyperlink adjacent to each individual chapter of the book.
Geotagged places will appear in bold green within the HTML version of the chapters.
Clicking on a geotag will prompt a small window with an appropriate interactive chart (RNC or ENC) along with a blue dot indicating the geotagged point with its latitude and longitude.
Also conveniently available to the mariner in the HTML version of Coast Pilot is the Code of Federal Regulations (text highlighted in dark blue) and the entire nautical chart (chart heading of each paragraph in royal blue). The geotagged Coast Pilot project is a collaborative effort between Coast Survey and the USGS Geographic Names Information System (GNIS). The GNIS is the official database of geographic names used by the federal government as well as information regarding specific geographical positions. As digital cartography evolves, having geotagged products opens up the door for potential future uses.