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AhaBulb: Stuff Everyone Should Know · ahabulb.com/boat-mmsi-nine-digits

What is an MMSI, which you need for a DSC marine radio?

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  1. A nine-digit ID number for your boat's radio
  2. Your boat's state registration number
  3. A radio channel used for weather

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References

  1. USCG NAVCEN, Maritime Mobile Service Identity www.navcen.uscg.gov/maritime-mobile-service-identity Checked 2026-10-09.

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