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Iran sends tankers loaded with oil past US military blockade

Published June 18, 2026 · Updated June 18, 2026 · By Linda Taylor

Iran sends tankers loaded with oil past US military blockade

Iran sends tankers loaded with oil past - Iran continues to assert its dominance in the maritime trade route by sending tankers loaded with oil past the US military blockade in the Gulf of Oman. Recent ship tracking data has revealed that three Iranian oil tankers, including the Diona, Hero II, and Sonia I, have successfully navigated through the contested area, with two transmitting their positions as they crossed the blockade line. A third vessel, the Sonia I, activated its location tracker shortly after entering the zone, indicating a strategic decision to bypass US restrictions. This movement, occurring just days after President Donald Trump announced the removal of the blockade, signals Iran’s growing confidence in resuming its oil exports despite the US maintaining the blockade until a new agreement is finalized in Switzerland. The anticipated conclusion of the deal by Friday has further fueled speculation about Iran’s intent to reclaim its shipping foothold.

Strategic Maneuvers Amid Diplomatic Tensions

The operation of these tankers loaded with oil highlights Iran’s tactical response to the ongoing diplomatic standoff with the United States. Analysts suggest that the movement reflects a calculated effort to signal readiness for resuming exports, even as the US insists the blockade remains in effect. "This shows Iran is optimistic the blockade is over, even if the US insists it will stay until Friday," said Michelle Wiese Bockman, a senior analyst at Windward Maritime Intelligence, in a statement to BBC Verify. The National Iranian Tanker Company (NITC), which operates the vessels, has faced stringent US Treasury sanctions, yet its ships continue to navigate international waters with relative ease. This underscores the company’s resilience and the potential for increased global activity as tensions ease.

Tracking the Movement of Iranian Vessels

According to MarineTraffic data, the Hero II and Sonia I departed Iran’s Chabahar port on Tuesday, where a cluster of other tankers is currently docked. These ships sailed through the US blockade line into the Arabian Sea on Wednesday, marking a significant step in Iran’s efforts to restore its oil trade. Meanwhile, the Diona began transmitting its location just beyond the blockade zone, suggesting a deliberate approach to avoid immediate detection. Windward Maritime Intelligence reports that these tankers have not shared their positions publicly since March, indicating a level of secrecy in their operations. If they reach their destinations, this could signal the resumption of Iran’s first oil exports in two months, as per TankerTrackers.com.

Analysts also note that the maneuvering of these tankers loaded with oil may have broader implications for the region’s energy dynamics. The US blockade, which has been in place since the Trump administration’s policy shift, has severely curtailed Iran’s oil exports, pushing them to a six-year low of 260,000 barrels per day in May. This is less than a fifth of the 2025 average of 1.67 million barrels per day, according to Kpler, a maritime intelligence firm. The US initially claimed enforcement could extend beyond the Gulf region, with BBC Verify previously reporting American forces intercepting Iran-linked vessels in the Indian Ocean, far from the Gulf. However, the recent movements suggest a more lenient approach, allowing Iran to reassert its presence in key shipping lanes.

Another NITC tanker, the Stream, stopped broadcasting its location just before the US blockade line, indicating a possible shift toward Iran. The unladen ship has been circling the Pakistani port of Karachi since 8 May, raising questions about its intended route. Since the US-Iran deal announcement, Iranian-linked tankers and cargo ships have shown increased global activity, as noted by the United Against Nuclear Iran (UANI) campaign group. Two additional NITC tankers, Dan and Sinopa, began sharing their positions in the Strait of Malacca between Malaysia and Indonesia on Tuesday, having been absent from tracking platforms since early April. These actions collectively suggest a coordinated effort to re-establish Iran’s maritime trade network.

"Iran is moving swiftly to restart its tanker operations," remarked Bockman. "This could indicate a strategic shift in their approach to overcoming the US blockade." The statement highlights the significance of the recent movements, which may pave the way for more substantial exports in the coming weeks. With the blockade’s potential removal, the Iranian government is likely to capitalize on the opportunity to bolster its energy revenue and regional influence.