New Delhi, March 20 -- About 90 ships including oil tankers have crossed the Strait of Hormuz since the outset of the war with Iran and it is still exporting millions of barrels of oil at a time when the waterway has been effectively closed, according to maritime and trade data platforms.

Many of the vessels that passed through the strait were so-called "dark" transits evading Western government sanctions and oversight that likely have ties to Iran, maritime data firm Lloyd's List Intelligence said. More recently, vessels with ties to India and Pakistan have also successfully crossed the strait as governments stepped up negotiations.

As crude prices spiked above $100 a barrel, U.S. President Donald Trump pressured allies and trade partn...