In a significant escalation of regional tensions, the United States military has announced that it will enforce a maritime blockade on Iran beginning April 13, acting on directives issued by US President Donald Trump.
According to the United States Central Command (CENTCOM), the measure will apply uniformly to ships of all nationalities operating in and around Iranian ports and coastal regions.
In a post on X, CENTCOM wrote, “Will begin implementing a blockade of all maritime traffic entering and exiting Iranian ports on April 13 at 10 a.m. ET, in accordance with the President’s proclamation.”
It further added that the blockade would be enforced impartially against vessels of all nations entering or departing Iranian ports and coastal areas
“The blockade will be enforced impartially against vessels of all nations entering or departing Iranian ports and coastal areas, including all Iranian ports on the Arabian Gulf and Gulf of Oman. Forces will not impede freedom of navigation for vessels transiting the Strait of Hormuz to and from non-Iranian ports,” CENTCOM added.
The US Central Command said additional operational details would be shared with commercial mariners through a formal notice prior to implementation.
“All mariners have been advised to monitor Notice to Mariners broadcasts and maintain communication with US naval forces on bridge-to-bridge channel 16 while operating in the Gulf of Oman and approaches to the Strait of Hormuz,” it added.

