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Monthly data reports

Each month Voydar counts what its AIS network saw: ships calling at ports, sanctioned vessels in port, transits of canals and straits, and cruise ship calls. Every report is frozen when the month ends, so a link or citation keeps pointing at the same numbers. Free to read, with the method and its limits stated on every page.

How these reports are made

The numbers are Voydar's own observations from AIS (the Automatic Identification System ships broadcast), processed by published methods: the port-call detector and the chokepoint gate lines. AIS sees only ships within range of a receiver that broadcast, so counts follow receiver coverage. That is why every report shows the network-wide total next to each change.

Read the methodologyOpen datasets (CC BY 4.0)