Hakan, and others, thank you. I guess the answer is yes, (up to 9999 per manufacturer, and then restart numbering).
Which answers the other question I did not ask, which is, is the PAB MOB mmsi dependent on having a Ship's MMSI? Answer is NO.
The reason I was asking about this was because I would like to change my VHF
mmsi over to an international one, rather than BoatUS, and I did not want to have to program an AIS MOB twice! (probably impossible) Thank you.
972XXYYYY, (where xx = manufacturer ID 01 to 99 assigned by CIRM; yyyy = the sequence number 0000 to 9999. When reaching 9999 the manufacturer should restart the sequence numbering at 0000.The manufacturer ID xx = 00 is reserved for test purposes).