If you need to replace the MMSI number in your Garmin AIS (Automatic Identification System) unit, it’s important to follow the correct steps to ensure the information is updated accurately. Whether you’ve purchased a used AIS unit or need to update the MMSI due to a change in ownership or other reasons, it’s crucial to have the correct MMSI number programmed into your unit. The MMSI is a unique identification number used in marine radios and AIS units to identify vessels and enable communication and tracking.
Here are the steps to replace the MMSI number in a Garmin AIS unit:
1. Obtain the New MMSI Number:
Before you start the process, make sure you have the new MMSI number that you want to program into your Garmin AIS unit. This number can be obtained from the appropriate authority in your country, such as the Coast Guard or communications authority.
2. Backup Current Settings (if applicable):
If your Garmin AIS unit has any custom settings or configurations that you want to preserve, consider making a backup of the current settings before proceeding with the MMSI update. This can usually be done through the AIS unit’s menu or interface, and the specific steps may vary depending on the model.
3. Access Configuration Menu:
Turn on your Garmin AIS unit and access the configuration menu. This can usually be done through the on-screen interface or keypad on the device. Refer to the user manual for your specific model if you are unsure how to access the configuration menu.
4. Enter Maintenance Mode (if required):
Some Garmin AIS units may require you to enter a maintenance or service mode before updating the MMSI number. This ensures that the new MMSI is entered correctly and prevents accidental changes to critical settings. Again, refer to the user manual for instructions on entering maintenance mode.
5. Enter New MMSI Number:
Once you are in the configuration or maintenance menu, look for the option to update the MMSI number. This may be listed as “Change MMSI” or something similar. Enter the new MMSI number when prompted, following any additional instructions provided by the unit.
6. Save and Confirm Changes:
After entering the new MMSI number, be sure to save the changes and confirm the update. This may involve navigating through the menu to find the option to save or apply the new MMSI. Again, consult the user manual for your specific Garmin AIS model for the exact steps.
7. Verify Update:
Once the new MMSI number is entered and saved, it’s essential to verify that the update was successful. Check the display or status menu on your Garmin AIS unit to confirm that the new MMSI number is now registered.
8. Test Transmissions (if applicable):
If your AIS unit is connected to a VHF radio or other communication system, consider testing the transmission to ensure that the new MMSI number is being transmitted correctly. This can be done by broadcasting a test message and verifying that the correct MMSI is included in the transmission.
By following these steps, you can safely and accurately replace the MMSI number in your Garmin AIS unit. It’s crucial to ensure that the MMSI number is always up to date and accurate to comply with maritime regulations and enable effective communication and tracking while at sea. If you encounter any difficulties during the process, don’t hesitate to reach out to Garmin customer support or a qualified marine electronics technician for assistance.
