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The Radio Navigational Aids (Publication 117) publication contains a detailed list of selected worldwide radio stations that provide services to the mariner. The publication is divided into chapters according to the nature of the service provided by the radio stations. The services include Radio direction finder and Radar Stations; stations broadcasting navigational warnings, time signals or medical advice; communication traffic for distress, emergency and safety including the Global Maritime Distress Safety System (GMDSS) and long range navigational aids. It also contains chapters describing procedures of the AMVER System, and the interim emergency procedures and communication instructions to be followed by U.S merchant vessels in times of crisis. A new edition of Publication 117 is published annually. This publication is available in its entirety on the website and there are also database queries available for much of the data contained within.

See also

• American Practical Navigator
• Buoy
• Coast Pilots
• Light List
• List of Lights
• Local Notice to Mariners
• Notice to Mariners
• Sailing Directions
• Radio navigation

References

1. ^ National Geospatial-Intelligence Agency, 2008.

Works cited

• National Geospatial-Intelligence Agency (2008). "Radio Navigational Aids". Maritime Safety Information. National Geospatial-Intelligence Agency. Archived from the original on 2009-10-26. Retrieved 2008-04-08.
• Bowditch, Nathaniel (2002). The American Practical Navigator. Bethesda, MD: National Imagery and Mapping Agency. ISBN 0-939837-54-4. Archived from the original on 2007-06-24.

External links

• Chapter 4: Nautical Publications - from the online edition of Nathaniel Bowditch's American Practical Navigator
• List of Radio Signals available online (Nautical Free)

v t e Passage planning
General references	American Practical Navigator
Nautical charts	Chart correction
Lights and buoys	List of lights
Geographic information	Coast Pilots Sailing Directions Distances Between Ports
Celestial navigation	Nautical almanac
Tidal information	Tide tables
Radio information	Radio Navigational Aids
Periodicals	Notice to mariners Local Notice to Mariners
See also	Glossary of nautical terms (A–L) Glossary of nautical terms (M–Z)

v t e Works about sailing
Books	Bowditch's American Practical Navigator Chapman Piloting Coast Pilots The Cruise of the Snark The Last Grain Race Light List Local Notice to Mariners Nautical almanac Notice to Mariners Radio Navigational Aids Sailing Alone Around the World Sailing Directions Sea Survival: A Manual Swallows and Amazons series Two Years Before the Mast
Magazines	Australian Sailing Blue Water Sailing Boating Life Classic Boat Lakeland Boating Vene WoodenBoat Yachting
See also	Glossary of nautical terms (A–L) Glossary of nautical terms (M–Z)

• Navigation
• Hydrography
• Sailing books