Mike, et al, Turkey is a country where they are requiring all Turkish Flagged boats longer than about 8 meters, pleasure or commercial, that want to use the Istanbul straits, Canakkale Stits, and the Sea of Marmara to be equipped with at least Class B AIS with a unique # assigned to that boat by the government. (http://www.idc-defence.com) Foreign flagged yachts are not required to have this equipment, but I "hear" that one can expect more "visits" by the authorities for boats that are at least not transmitting a Class "B" AIS signal. So, when they wrote the rules for these DSC radios, they wrote that possession of these radios that have the same MMSI number as DSC boat "A" , on DSC boat "B" is a civil violation, and potentially, a criminal one. The rule does not address use, use in the DSC mode, etc etc. It states simply "possession." Now, my guess is that some technocrat wrote the rule not understanding the concept, but, until the new standard is approved, and implemented in country, I do not expect the rule to change. Lee Begin forwarded message: Date: Wed, 24 Nov 2010 11:14:45 -0800 From: Mike Maurice <mikem@yachtsdelivered.com> Lee, My attempt to clarify this, a little! The regulatory attempts to bring all this under control is in a state of flux, worldwide. Draft standard "H" is I believe under debate even now... For routine DSC transmissions the MMSI number is important and such a set without one is not of much use until it has the number... Lee, I don't think you have to discontinue the use of the radio as your sentence above indicates. Not sure about that... [demime 1.01d removed an attachment of type application/pkcs7-signature which had a name of smime.p7s]