At least 34 tankers linked to Iran have reportedly passed through or around the US blockade in the Strait of Hormuz despite Washington’s claims of tightly restricting maritime movement, according to a Financial Times report.

The report said that of these vessels, 19 Iran-linked tankers exited the Gulf, while 15 others entered from the Arabian Sea heading toward Iran, reports NDTV.

Citing data from maritime tracking sources, the report claimed that at least six of the outbound ships carried Iranian crude oil, transporting an estimated 10.7 million barrels. Based on discounted pricing due to sanctions, the shipments could be worth around $910 million.

One Iranian-flagged supertanker, Dorena, reportedly passed through the region after switching off its transponder, a device used for tracking location and identity. It was later involved in a ship-to-ship transfer off the coast of Malaysia, allegedly to conceal the oil’s origin.

The developments come amid heightened tensions following the US naval blockade of Iranian ports, which Washington says aims to restrict Tehran’s oil revenues.

US President Donald Trump has claimed that the United States “totally controls” the Strait of Hormuz and that the blockade strategy has been a “tremendous success,” saying restrictions will remain until a final agreement with Iran is reached.

However, the US Central Command said American forces have directed dozens of vessels to turn back or return to port since the blockade began.

The Strait of Hormuz remains a critical global oil transit route, with Iran and its allies asserting new restrictions on navigation in the area, further escalating maritime tensions.