
Port-call activity and load→discharge trade lanes reconstructed from our own real-time vessel tracking — the busiest harbours by traffic and turnaround, and the routes vessels actually chain between. A port-and-chokepoint view of trade flow, derived end-to-end on the platform.
A trade lane is a vessel’s departure from one port chained to its next arrival at a different port (load→discharge), counted across every tracked vessel in the window. Coverage is densest in regions with strong terrestrial tracking; the window shown reflects the history mined so far. Median time in port and median transit are measured only within that mined window, so calls and legs straddling its edges are truncated or excluded — medians at the very start and end of the window can read low. Activity momentum differences the two named months, both of which have ended and carry near-full day coverage, so a month still filling is never counted as a decline. The count above is distinct AIS MMSI (radio identifiers), which can differ from hull count. All analytics →