U.S. Marines intercept tanker near Iran
The Iranian tanker M/T Celestial Sea was boarded by U.S. Marines in the Gulf of Oman on May 20, 2026, after U.S. Central Command said the vessel was suspected of trying to violate the American blockade. Marines from the 31st Marine Expeditionary Unit searched the ship as it was moving toward a possible Iranian port, before ordering the crew to change course. The vessel was later released after the inspection.
Blockade pressure around the Strait of Hormuz
The operation comes amid growing pressure around the Strait of Hormuz, where Iran has maintained strong control over shipping since the conflict began on February 28, 2026. According to AP, the U.S. blockade was imposed in mid-April to pressure Tehran to reopen the strait and accept a deal to end the war. U.S. Central Command said American forces have now redirected 91 commercial ships to enforce compliance with the blockade.
For maritime security, the incident shows how naval enforcement, oil shipping and regional diplomacy are now closely linked in the Gulf. The Gulf of Oman and the Strait of Hormuz remain critical corridors for global energy flows, and each interception increases uncertainty for shipowners, crews and insurers. The key point is clear: the M/T Celestial Sea was not seized permanently, but its boarding confirms that the maritime blockade is still active.
Stay informed with our latest coverage of global maritime and naval security developments:
