AIS Map. Ship Marine Traffic. Live AIS Traffic. - Ships Now
shipsnow.comIt is difficult to determine the maximum coverage area, but it can be imagined in this example: a vessel with an AIS transmitter connected to an external antenna located at a height of 15 meters above sea level will be able to exchange a signal with the coastal AIS station at a distance of 15-20 nautical miles (approximately 28-38 km).