FORUM RULES UPDATED - The forum rules have been updated to continue to provide a friendly and safe environment for our member community. Please take a moment to review the updated rules and our terms of use and privacy policy. Click here for Forum Rules which has links to the 'terms of use' and 'privacy policy'.
I have just bought a second hand boat and it has a Navman 7100 VHF and when I go into the main menu it is asking for a "user MMSID"....can someone tell me what this...Many thanks.
