Have questions about your boat's electronics?

Use this page as a simple, go-to guide to answer your questions.

Have specific questions? Search all the manuals, faqs, forums, and product pages for our products below


MMSI Information maritime communication equipment

-What kind of Maritime Mobile Service Identity (MMSI) do I need?
-Domestic Only voyages can register for an MMSI at BoatUS for US and Canadian operation
-Try US Power Squadrons web site to get an MMSI
-MMSI for any vessel operating internationally MUST obtain a Ship Station License from the FCC


-U.S. VHF Channel Information with new channel numbers
-What is Digital Selective Calling (DSC)?
-USCG Rescue 21 coverage in Alaska

AIS Information

-What is the Automatic Identification System (AIS)? and do I need it?
-USCG regulations for AIS carriage on commercial vessels has been updated
-AIS Class A system diagram
-Best FAQ about AIS from USCG

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