Navigation Center
United States Coast Guard
U.S. Department of Homeland Security

News and Notices

Maritime Mobile Service Identity content upgrade

The U.S. Coast Guard Navigation Center (NAVCEN) has upgraded the Maritime Mobile Service Identity (MMSI) section of its website. The new MMSI section includes a more user-friendly interface, as well as additional information about MMSIs and their application to maritime safety. The upgrade is part of NAVCEN's ongoing effort to provide the maritime community with the latest information and resources to help keep mariners safe.  The section may be viewed here: Maritime Mobile Service Identity | Navigation Center (

Thursday, June 8, 2023
GPS Block IIF Satellite Antenna Patterns

The Space Systems Center (SSC) of U.S. Space Force has released the Boeing Global Positioning System (GPS) Block II Follow-on (IIF) satellite antenna patterns for world-wide public use. The culmination of a multi-year, interagency effort, the NAVCEN's website is now complete with antenna patterns for all GPS satellites. You may view the antenna patterns on the GPS Technical References page here under GPS-IIF Satellites: Antenna Patterns for L1, L2 and L5.

Wednesday, May 17, 2023
Reporting Sexual Misconduct on U.S. Vessels

The Coast Guard has released an updated Marine Safety Information Bulletin and infographic with guidance on reporting sexual misconduct on U.S. vessels. View the MSIB (PDF).

Tuesday, April 11, 2023
State of the Coast Guard 2023

The Commandant of the U.S. Coast Guard, Admiral Linda Fagan delivered the 2023 State of the Coast Guard address. You can view it here.

Thursday, March 9, 2023
Reducing Vessel Strikes of Atlantic Right Whales

Click on the hyperlinks to view the 2005 and 2007 PARS Reports for Reducing Vessel Strikes of Atlantic Right Whales.

Thursday, March 9, 2023
Hazardous Weather Outlook Eastern Pacific

The U.S. Coast Guard, National Weather Service, and National Hurricane Center announce the addition of a new Hazardous Weather Outlook service covering the Eastern Pacific Ocean. Read more here.

Monday, March 14, 2022
The Navigation Center is publishing Broadcast Notices to Mariners (BNMs)

The Navigation Center is now publishing Broadcast Notices to Mariners (BNMs) in filterable, digital format for the entire First Coast Guard District. Coast Guard Sector St. Petersburg, FL is the latest addition. You can search the database using a wide variety of parameters to get the BNMs you need the most. Click here to view the BNM page now.

Wednesday, January 12, 2022
Cessation of HF Voice Distress Frequencies

The Coast Guard ceased monitoring all High Frequency (HF) voice distress frequencies within the contiguous United States and Hawaii on 7 February, 2022. See MSIB Number: 10-21.

Wednesday, January 12, 2022
Visit the U.S. Coast Guard Navigation Center Facebook page.

Click on this link.

Wednesday, January 12, 2022
U.S. Space Force Roadmap

The U.S. Space Force has released a roadmap of the GPS enterprise running through the end of FY-28.

Monday, January 10, 2022