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Rescue 21 for Boaters

Digital Selective Calling

No new equipment is needed for you to benefit from Rescue 21.  The new system will increase the Coast Guard’s ability to respond to distress calls in the coastal zone. However, you can help us improve response time by using a marine-band VHF-radio equipped with digital selective calling (DSC).

If properly registered with a Maritime Mobile Service Identity (MMSI) number and interfaced with GPS, the DSC radio signal transmits vital vessel information, position, and the nature of distress (if entered) at the push of a button. In an emergency, with one push of a button, your DSC radio will send an automated digital distress alert containing your MMSI number and position to other DSC-equipped vessels and rescue facilities. DSC will provide a quicker and more accurate response by the Coast Guard. For more information on Digital Selective Calling check out:

Get your MMSI Number

The Boat U.S. and Sea Tow MMSI Programs have been certified by both the Federal Communications Commission (FCC) and the Coast Guard. To obtain and register your MMSI number, the Coast Guard recommends logging onto http://www.boatus.com/mmsi/ or http://www.seatow.com/boatingsafety/mmsiinfo.htm and following the instructions.

Vessel Safety Check

The Coast Guard Auxiliary is available to help local boaters ensure their radios are in good working order. You can log on to http://www.safetyseal.net/GetVSC to schedule a vessel safety check in your local area. Coast Guard Auxiliary Vessel Examiners can educate boaters on the importance of properly connecting  GPS to your VHF-radio to ensure the DSC position capability functions properly. They will provide helpful literature and direction regarding registration of MMSI information.  It is recommended that boaters contact a marine electronics professional should technical assistance be needed in accomplishing the interconnection.

Sending a DSC Message to Coast Guard Sectors

DSC distress alerts will be received by the Coast Guard when Rescue 21 is fully operational in your area. Listed below are the MMSI numbers for Rescue 21 deployed Sectors/Groups. These numbers can be used to send a DSC message directly to a Coast Guard Sector/Group.

Rescue 21 VHF DSC MMSI Numbers
Sector/Group MMSI
Baltimore 003669961
Boston 003669901
Buffalo 003669960
Charleston 003669907
Corpus Christi 003669916
Delaware Bay 003669905
Detroit 003669930
Hampton Roads 003669922
Honolulu 003669939
Houston/Galveston 003669915
Humboldt Bay 003669909
Jacksonville 003669891
Key West 003669918
Lake Michigan 003669933
Long Island 003669931
Los Angeles/Long Beach 003669912
Miami 003669919
Mobile 003669914
New Orleans 003669908
New York 003669929
North Bend 003669911
North Carolina* 003669906
Northern New England* 003669921
Columbia River 003669937
San Diego 003669913
San Francisco 003669926
San Juan 003669992
Sault Ste Marie 003669935
Puget Sound 003669938
Southeastern New England 003669928
St. Petersburg 003669917
All USCG coast stations in the United States 003669999
International MMSI number designated for all coast stations
009990000

Sea Area 1 will not be declared until Rescue 21 has reached Full Operational Capability.

* Actual miles covered are slightly lower due to two outstanding towers in Sector North Carolina and Sector Northern New England. Planning for outstanding towers is in progress.

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Last Modified 4/19/2012