Main Menu: DSC Tab
HOW ARE MMSI ASSIGNMENTS OBTAINED?
Non-commercial users (e.g. recreational users who remain in domestic waters and only carry VHF,
EPIRB (Emergency Position Indicating Radio Beacons), and Radar) are not required to have a FCC ship
station license. The FCC and Coast Guard have authorized some second and third party vendors to as-
sign MMSI numbers. This service is limited to registering recreational vessels only.
To receive information on how to obtain a recreational MMSI number please contact:
http://www.uscg.mil/rescue21/links/mmsi.htm or http://wireless.fcc.gov/marine/.
U.S Non-Federal User: Commercial users, or those who travel outside the U.S. or Canada, must
apply for a ship station license, or an amendment to a ship station license. To find out if you require a
Ship Station license contact: http://wireless.fcc.gov/marine/fctsht14.html. If your vessel requires licensing
by the FCC you will obtain a MMSI during the application/licensing process when you file FCC Forms
159 and 605.
U.S. Federal User: Federal users can obtain MMSI assignments from their agency radio spectrum
management office. These procedures are currently under review by the NTIA (National Telecommunica-
tions and Information Administration).
Outside the U.S.: Users can obtain an MMSI assignment from their telecommunications authority
or ship registry, often by obtaining or amending their ship station license.
In Canada: Industry Canada is responsible for assigning MMSI numbers to commercial and recre-
ational vessels. Information is available at the following web site: http://apollo.ic.gc.ca/english/mmsi.html.
For more information on MMSI’s visit: http://www.navcen.uscg.gov/marcomms/gmdss/mmsi.htm.
HOW CAN GARMIN HELP YOU WITH DSC?
To receive Distress Calls or Position Reports, you must have a DSC-equipped chartplotter as well as a
VHF radio with DSC support. During normal, non-emergency Position Report communication, Channel
70 (156.525 MHz) has been set aside as the VHF/DSC digital call channel. For a Distress Call, a mariner
presses the MayDay button on their VHF radio. The call transmits on an emergency channel with the
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