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1. How often is VIVS information updated?

VIVS information is updated daily during normal business hours (Mon-Fri) by staff at the United States Coast Guard Navigation Center (NAVCEN). Information is not updated on weekends or holidays.

2. What is Automatic Identification System (AIS)?
To learn more about AIS, please click here.

3. Where can I find a list of USCG type approved equipment?
A listing of all USCG type-approved equipment can be found at the Coast Guard Maritime Information Exchange (CGMIX) [EQList Search, Select: Approval Series Name--Shipborne AIS]. Voluntary AIS users may avail themselves of either an AIS Class A or B device, but, such device must be FCC certified for its use in the United States. For a listing of FCC certified AIS equipment use the FCC OET Equipment Authorization Search Form [Select: Equipment Class--AIS].

4. How can I correct AIS broadcast errors?
The USCG AIS Encoding Guide can assist in the proper encoding of an AIS transponder used in U.S. navigable waters.

5.  Where can I find information about the United States Coast Guard?
Information about the Coast Guard, including Archive information about stations, lighthouses, and vessels, can be obtained by visiting the Coast Guard Facts, Images, History, and More web page.

6.  Have a VIVS question not answered by the FAQs?
Please contact us (select "Vessel Information Verification Service (VIVS)" from the pull-down menu).