Iran resumes crude exports from Kharg Island after US lifts blockade

Iran has successfully sent three oil tankers past the U.S. military blockade in the Gulf of Oman, marking a significant shift in the country’s ability to export crude oil despite ongoing tensions. According to ship-tracking data, the tankers—Diona, Hero II, and Sonia I—passed the U.S.-enforced blockade line, which spans from the eastern tip of Oman to the Iranian coastline. Two of the vessels transmitted their real-time locations as they crossed the threshold, while the third activated its tracking system shortly after crossing into the Arabian Sea. These movements suggest a growing confidence among Iranian officials that the U.S. has effectively lifted the restrictions, even though the U.S. government had initially stated that the blockade would remain in place until a new agreement with Tehran was finalized in Switzerland.

The three tankers, all operated by the National Iranian Tanker Company (NITC), are part of a broader effort by Iran to resume oil exports following a prolonged period of disruption caused by the U.S. sanctions and the blockade. The company, which has faced numerous U.S. sanctions, owns all three vessels, and each carries a substantial load of crude oil. Together, the tankers hold a combined total of 3.8 million barrels of oil, representing one of the largest single shipments to pass the blockade in recent months. The movement of these tankers comes amid reports that Iran’s crude exports had dropped to a six-year low of 260,000 barrels per day in May, significantly below the pre-sanctions average of 1.67 million barrels per day.

The U.S. military’s continued presence in the region has raised questions about the effectiveness of the blockade, particularly given that the U.S. had previously announced plans to enforce the restriction beyond the Gulf itself. In fact, American naval forces have intercepted Iranian-linked vessels in the Indian Ocean, thousands of miles away from the Gulf, demonstrating the scope of the U.S. strategy. However, the recent passage of the three tankers suggests that the U.S. may have either relaxed its enforcement measures or failed to fully implement them. The U.S. Department of Defense noted that a similar vessel, Tifani, had been intercepted more than 10 days after departing the Gulf, indicating that enforcement remains inconsistent.

Meanwhile, other Iranian tankers continue to operate under the radar. A fourth NITC-owned tanker, Stream, ceased transmitting its location just before reaching the U.S. blockade line and is reportedly heading toward Iran. Ship-tracking data reveals that the unladen tanker has been orbiting near the Pakistani port of Karachi since mid-May, suggesting a possible attempt to evade detection. Additionally, two other tankers—Dan and Sinopa—have begun transmitting their positions in the Strait of Malacca, between Malaysia and Indonesia. Both vessels had not been tracked since early April, raising concerns about their potential return to Iranian waters.

The increased activity of Iranian tankers coincides with the resumption of crude exports from Kharg Island, a major Iranian port, following the U.S. decision to lift the blockade. This move has been welcomed by some analysts who argue that it signals a strategic shift in Iran’s approach to international trade, leveraging its maritime capabilities to bypass U.S. restrictions. The campaign group United Against Nuclear Iran (UANI) has noted a noticeable increase in the global activity of Iranian-linked vessels since the announcement of the U.S.-Iran deal, further reinforcing the idea that Iran is actively working to restore its economic ties with foreign markets.

As the situation develops, it remains unclear whether the U.S. will maintain its stance on the blockade or allow greater flexibility in the flow of Iranian oil. With the upcoming signing of the agreement in Switzerland, the coming weeks will likely see a closer examination of how both nations intend to manage their relationship moving forward. For now, the successful passage of the three tankers represents a symbolic victory for Iran, highlighting the challenges the U.S. faces in enforcing its policies in a complex geopolitical landscape.