Shipping data reveals a significant decline in tanker activity through the Strait of Hormuz, a critical chokepoint for global oil trade, as tensions between the United States and Iran escalate.On July 20, 2026, only four vessels transited the strait on July 19, down from eight the previous day, according to data from LSEG.

At least three oil products tankers and one Very Large Crude Carrier entered the strait since Friday to load oil, though no liquefied natural gas tankers have passed through since July 16.The U.S.reported completing an eighth consecutive night of attacks on Iran, while Iran claimed it targeted vessels violating its navigation rules in the strait.Both nations have intensified attacks on shipping traffic, with the U.S.enforcing a naval blockade on Iranian ports and Iran accusing the U.S.of disrupting its strategic waterway.The strait handles approximately one-fifth of global oil trade, making its disruption a major concern for international energy markets.Analysts warn that the conflict could lead to prolonged disruptions, affecting global oil prices and supply chains.