(a) The Coast Guard broadcasts notices to mariners on its own or U.S. Navy radio stations to report navigational warnings containing information of importance to the safety of navigation of vessels, such as the position of ice and derelicts, defects, and changes to aids to navigation, and drifting mines. Radio stations broadcasting marine information are listed in “Radio Navigational Aids” (National Geospatial-Intelligence Agency Publication 117) and United States Coast Pilots.

(b) Any person may view or download “Radio Navigational Aids” from the National Geospatial-Intelligence Agency's Web site (http://msi.nga.mil/NGAPortal/MSI.portal); look for “Publications.”

(c) Any person may purchase United States Coast Pilots from NOAA Certified Printer Partners listed at http://www.nauticalcharts.noaa.gov/staff/print_agents.html#mapTabs-2.