The Strait of Hormuz crisis has shaken global supply chains, forcing nations to scramble for control over other maritime chokepoints. Shipping density data from Global Maritime Traffic for September 2024 shows how vulnerable vessel traffic has become across the world's narrowest waterways. As tensions escalate, governments are reassessing their dependence on a handful of critical passages.

A Nature Communications paper by Jasper Verschuur, Johannes Lumma, and Jim W Hall maps out just how much global trade flows through individual chokepoints. Country-level dependency data reveals that disruptions at even one strait can ripple through entire economies. Freight rerouting data from MarineTraffic adds to the picture, showing how shippers change course during periods of conflict.

The implications for commodities markets are clear. Any prolonged closure of a major strait drives up shipping costs and energy prices overnight. Nations with the most exposure to these waterways face the steepest risks.