Ships report their position, course and speed by AIS. Earth Live shows the ships heard by Finland's coastal network live on a 3D globe: tap one for its name, type, destination and speed.
The data come from Fintraffic's open AIS service, which covers the Baltic Sea around Finland, the Gulf of Finland and the Gulf of Bothnia. It is one of the few live AIS feeds that is free and open for any use, including commercial.
Source: Fintraffic / digitraffic.fi (CC BY 4.0), when this page loaded.