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News and Notices:

Item: Get the latest News and Updates RSS Feeds (LNMs, LL Corrections)
Item: On June 22, 2017, a GPS disruption was reported in the Black Sea and an alert was distributed through the Maritime Security Communications with Industry Web Portal. The Navigation Center encourages mariners to review marine safety alert 01-16 to familiarize themselves with the required procedures to report a disruption and actions they should take to mitigate the affect of a disruption.
Item: The Navigation Center has a new tool to enable commercial vessel owners/operators to verify the accuracy of their Automatic Identification System (AIS) broadcast information.  We encourage you to visit the Vessel Information Verification Service ("VIVS").  Your feedback is welcome.
Item: A printable version of the amalgamated Navigation Rules, including Annexes, Implementing Rules, Penalties & Bridge to Bridge regulations, is available for download (only 12 pages if printed double-sided).
Item: The unclassified paper Best Practices for Improving the Operation and Development of GPS Equipment Used by Critical Infrastructure, co-authored by the National Cybersecurity & and Communications Integration Center, and National Coordinating Center for Communication, is available for download. The 21-page document recommends installation and operation strategies to improve the resilience of equipment receiving. 
Item: The International Telecommunications Union has amended the VHF maritime radio channel numbering scheme which will affect 18 channels used in the U.S.  New VHF radios will eventually begin using this scheme.  Changes to U.S. channel numbers are shown on our U.S. VHF Channels page.
Item: In collaboration with the Department of Transportation and U.S. Army Corps of Engineers, the U.S. Coast Guard has reduced number of Differential GPS sites throughout the country, while maintaining coverage in major maritime ports and waterways. The FRN and graphics depicting the changes to the system are available on our DGPS General Information Page.