Wednesday, 22/04/2026   
   Beirut 13:47

US Embargo on Iran Undermined as 34 Tankers Slip Through, Vortexa Says

At least 34 oil tankers linked to Iran have managed to circumvent the US embargo imposed on the country since it took effect, according to the shipping tracking group Vortexa. Several of the vessels were carrying Iranian crude oil, contradicting President Donald Trump’s declaration that the embargo has been a “tremendous success,” the Financial Times reported.

In an interview with CNBC on Tuesday, Trump said, “The embargo has been a tremendous success,” adding that he would not lift the US embargo on the Strait of Hormuz until Washington reaches a “final agreement” with Iran.

However, Vortexa data shows that dozens of ships have bypassed the restrictions. At least 19 oil tankers linked to Iran have crossed the US blockade to leave the Gulf, while at least 15 others have entered the Gulf from the Arabian Sea heading toward Iran. At least six of the departing vessels were carrying Iranian crude oil, totaling 10.7 million barrels.

Among them was the Iranian-flagged supertanker Dorina, which evaded the embargo by switching off its transponder the device that broadcasts its location and identity. According to Vortexa, the Dorina was one of two tankers that left Iranian waters on April 17, while two other crude oil carriers transited the area on April 20. Satellite images analyzed by the Financial Times in March showed the Dorina off the coast of Malaysia conducting a ship-to-ship oil transfer; its last recorded position was off southern India on April 18.

Meanwhile, several sanctioned tankers entered the Persian Gulf from the Gulf of Oman, including the Morelicious and Alicia, both sanctioned by the United States last year. The two ships passed through the Strait of Hormuz on the night of April 14 before sailing to the northern end of the Gulf.

US Blockade Violates Ceasefire Agreement

The United States imposed a blockade on all vessels entering or leaving Iranian territorial waters on April 13, violating a ceasefire agreement reached in Pakistan. According to notices issued by the US Navy, the blockade was expanded on April 16 to include all Iranian vessels on the high seas or those “carrying goods that Iran could use in conflict.”

US forces have so far seized one container ship in the Gulf of Oman and boarded an oil tanker in the Indo-Pacific region. The US Central Command announced Tuesday that the Navy had ordered 28 ships to return to Iranian ports since the blockade began.

In response, Iran has maintained control of the Strait of Hormuz, designating a specific route for non-military vessels, which are only permitted to pass with Tehran’s authorization. At least 30 ships attempted to transit the narrow waterway on Friday, when Iran announced it was opening the strait in line with the ceasefire declaration in Lebanon. However, those vessels turned back after Tehran closed the strait again, citing the continued US blockade and clarifying that passage would only be allowed with prior authorization.

Source: Financial Times