Radio Navigational Aids (NGA Pub No. 117) contains detailed lists of worldwide stations providing radio and electronic services used in marine navigation, including:
Radio Direction Finder (RDF) and Radar Stations
Radio Time Signal Stations
Navigational Warning Broadcast Stations
Distress, Emergency, and Safety Traffic Broadcast Stations
Medical Advice Communication Stations
Long Range Navigational Aids
The publication also provides guidance for participation in the Automated Mutual-Assistance Vessel Rescue System (AMVER), and procedures for U.S. commercial vessels to establish communications with U.S. protective forces during times of national crisis.
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