There seems to be a lot of confusion here regarding the MMSI, it's requirement to have one, it't purpose and also in some comments, its connection to the EPIRB.
Twodogs, this will lead to a bit of a thread drift, but I think it has already gone that way already anyway. I just want to address (quote) some comments which raise some concerns (and some just out of interest) and I don't think that that can be done in between seperate posts. Hopefully you find the answer still though.
Also, I am not saying that I am correct. I am just opening some of the comments up for further discussion.
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I guess an MMSI number would be useful for an AIS transponder.
A MMSI is not just useful, but is required for the transceiver to operate. It is what transmits the unique code (MMSI)
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Hopefully the VHF radio would still function for voice communication without entering a MMSI number.
Are you talking about not programming the MMSI at initial instal or before broadcasting? In either case, a VHF radio (or any other radio) will operate without a MMSI. You just won't be able to use the DSC or Distress feature of the radio. If you are referring to the act of making an actual call, well it will also still operate. In fact, after making a distress call using DSC, you are meant to back it up with a voice call anyway.
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The MMSI number is used for MF/HF SSB marine radio, as the Australian Maritime Safety Authority only monitors DSC calls on HF.
It is also used for VHF (and AIS). AMSA might only monitor HF, but other vessels in your area will receive it on VHF (a much better and clearer option then HF).
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You need the LROCP to obtain the MMSI number.
As AIS is on the VHF spectrum, all you need is the simpler SROCP to apply for a MMSI
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AIS is a safety feature and should be linked to the EPIRB the vessel carries.
The issue with this is that the devices that utilise an MMSI are fixed instruments where as the EPIRB is often transportable. For example, one of my EPIRBS has two lots of information on it. When I go remote camping (and I mean remote as in not seeing another vehicle or person for sometimes a week or more), I allocate the EPIRB to my car along with some trip details. This means if I was to activate the EPIRB and the signal is triangulated to the middle of the desert, then it will make sense to whomever is monitoring. If it is still allocated to the boat, then a lot of time is wasted scratching heads.
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why you need to have a MMSI number.
Because the MMSI is the identifying code for the boat. One code for AIS and DSC. My AIS display is on an older chart plotter and it won't actually show the name of anything using a class B transceiver, only the MMSI. Pain in the arse, but you do get to recognise some numbers eventually. I must do a software update for that plotter. I am sure ray marine have fixed the issue.
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A MMSI is a unique ID, our EPIRB's use the same ID.
I am not going to call BS, but this doesn't sound right to me. A MMSI is a 9 number unique identifier to the boat. An EPIRB is a HEX number containing 15 numbers and a also a few letters. The Hex number is allocated to the EPIRB at manufacture. A MMSI is inputed to your radio (including AIS) after purchase. Some countries require the MMSI to be entered by the dealer, not by the individual.
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Why do you need a VHF License for an MMSI number?
For the record, I agree with your grievance. But the AIS is a device using the VHF spectrum and currently (right or wrong) VHF requires an operators licence.
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The other crazy thing is the number is allocated to a vessel not a person so I get the licence obtain the MMSI number sell the boat the new owner gets the MMSI number but has never done the obtained the licence?
Because as when you sell a boat, you don't usually strip it of it's radios and instrumentation, and as someone else has said, entering an MMSI into a radio or AIS transceiver is usually a one shot deal. EPIRBS on the other hand expire (well the batteries do) and it is often easier to just chuck and replace with a new one (again right or wrong).
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The other crazy thing is the number is allocated to a vessel not a person so I get the licence obtain the MMSI number sell the boat the new owner gets the MMSI number but has never done the obtained the licence?
Yeah crazy huh.... Typical government departments. The MMSI is obtained through AMSA whereas you VHF licence is obtained through ACMA. I'm betting the ACMA have directed AMSA to not allocate an MMSI without first have a VHF licence due to the fact the same MMSI can be inputted to a VHF radio
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I think it has to be transferred though, as your AMSA login and profile is based on the person. In that profile the MMSI is tied to a vessel name.
No, the MMSI stays with the boat. What you do need to do is inform AMSA of the change. They don't charge for any of this and I did it recently with a 3 min phone call...
The AIS is also only an AID to navigation. Whereas the EPIRB is an Authority (for want of a better term). AIS isn't yet a requirement for pleasure vessel although it probably could be, especially those doing night passages. At the moment the legislation is geared up towards the big boys. I would hope if they ever make AIS a requirement then obtaining some of these numbers/licences or what have you, becomes easier.
Open to discuss, and free to be corrected.