Which of the following is not listed as a MMSI database maintainer in the material?

• A. National Oceanic and Atmospheric Administration - Office
• B. Federal Communications Commission - Watch Officer
• C. International Telecommunication Union - Publication
• D. Operations Systems Center - Martinsburg, WV

Answer: (A)

MMSI database maintenance is handled by the international regulator and the national authorities responsible for maritime communications. The International Telecommunication Union provides the official MMSI allocations and standards, while in the United States the Federal Communications Commission serves as the national authority that maintains the MMSI registry. The Operations Systems Center in Martinsburg, West Virginia, supports the U.S. Coast Guard’s maritime safety communications infrastructure, including the MMSI data. The National Oceanic and Atmospheric Administration focuses on weather, oceans, and climate data, not on registering or maintaining MMSI identities. So the NOAA office is not listed among MMSI database maintainers.