Originally Posted by estarzinger
^^ you absolutely need an MMSI for the AIS. And don't be tempted to get one off the BoatUS website, as those are NOT internationally valid/recognized numbers.
You do need an MMSI for your AIS transponder and your DSC
radios, but if its too difficult to get one from from OZ, you can get one in 10 minutes from the BoatUS website. You need to give them a US address (friend or family). This MMSI will allow the ships and shore stations to see you and get your boat's name.
Registering the MMSI with the ITU doesn't gain you much, and I found out that my expensive, FCC issued MMSI wasn't either. I contacted the ITU and they said it was the FCC's responsibility--you may get the same service
from your bureaucrats.
The other part of the deal is that once the AIS is programmed with an MMSI, its a PITA to change it (similar for the DSC
VHF's, but some allow you one or two changes).