Tag Archives :IMO

What is the difference between MMSI and IMO?

Oct 27,2020
Leeric
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Maritime knowledge

The AIS system is using the MMSI, not the IMO number, to identify a vessel. The IMO number is part of the static AIS information provided by the vessel crew and can be transmitted additionally. So it could happen if you are searching a vessel in the vessel database by its IMO number that you find more than one entry because the vessel had different MMSI numbers in the past. ...