Cesium non mobile AIS coverage

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This is a demo page showing the nominal range of current known non mobile AIS stations as registered on this site.

AIS station coverage prediction
IALA provide a Guideline on marine beacon coverage prediction. Coverage is determined through the consideration of a number of factors including propagation effects, noise and interference.  The reader is advised to refer to IALA Guideline 1119 for further information.

Below a view of the nominal range (25 NM) of the stations but if they are eAtoN then the range is 15 NM. These are, if something changed in the database, updated every hour. It could be you should refresh you browers cache with ctrl-F5 to see the latest updates.