If you have an older Furuno GPS product, there is a possibility that it may behave erratically after the 17th March 2019. This is due to something called GPS week number rollover. If you experience problems with your GPS position after this date, go into the menu of your device and execute a cold start. If you are unsure how to do this, please contact Barry Electronics Ltd. and we will help you. Please note that after a cold start, it will take about ten minutes for the GPS to acquire a fix again.
The above solution should rectify any problem with the GPS position but it will not resolve the fact that the GPS date will be incorrect. In most cases, this shouldn’t be a problem, but if the GPS is feeding critical items such as GMDSS equipment, AIS, etc., it will have to be replaced.
Some of the more common equipment affected includes:
Felcom-12 Inmarsat-C (with built-in GPS).
GP-1600/1810/1610C/1650/1850/280/3210/380/680 GPS plotters.
GP-31 GPS navigator.
We regret the inconvenience caused – please feel free to contact us for advice.