Uploaded January 2018 | Updated September 2026, 1 week ago
The new “MMSI” video shows how a DSC-VHF marine radio programmed with a unique nine-digit code called a Maritime Mobile Service Identity (MMSI) can help provide for safer boating.
Viewers will also learn how to obtain an MMSI at no charge, how to program an MMSI into their handheld or permanently mounted DSC-VHF marine radio, and how to use it in case of an emergency. Visit usps.org/mmsi to obtain your MMSI. For MMSI help, email mmsi@usps.org.
The new “MMSI” video shows how a DSC-VHF marine radio programmed with a unique nine-digit code called a Maritime Mobile Service Identity (MMSI) can help provide for safer boating.
Viewers will also learn how to obtain an MMSI at no charge, how to program an MMSI into their handheld or permanently mounted DSC-VHF marine radio, and how to use it in case of an emergency. Visit usps.org/mmsi to obtain your MMSI. For MMSI help, email mmsi@usps.org.
