The tracking of shipping routes is an oft-cited achievement of modern data science. But comparable data has been collected for centuries—as our video shows.
While modern transponder data can indeed provide a near real-time picture of supply and demand, it has long been possible to monitor changes in the maritime economy through a number of sources.
The shipping journal Lloyd's List has long offered a comprehensive overview of commercial maritime traffic between ports, with data stretching back as far as 1692.
Another source of information is historical ship logs - records that reveal further details about the exact routes that vessels traversed, as well as prevailing winds and other weather patterns.
Real value of world exports (1900=100). Source: Our World in Data.
Engineering the seas......MUCH MORE