I know very little about boat data but I was also curious; it looks like it is using Vesselfinder which in turn uses data from this AIS system. https://en.wiki

I know very little about boat data but I was also curious; it looks like it is using Vesselfinder which in turn uses data from this AIS system. https://en.wikipedia.org/wiki/Automatic_identification_system https://en.wikipedia.org/wiki/Automatic_identification_syste... There is as much information as a normal human could want to know about how ship location data is tracked ;-)