The United States is set to resume enforcement of a maritime blockade on Iran beginning Tuesday, according to a navigation advisory issued by the U.S. Navy-led Joint Maritime Information Center (JMIC). The advisory states that the measure will apply to vessels entering or departing Iranian ports, oil terminals, and coastal areas amid renewed tensions in the Strait of Hormuz.

Under the advisory, ships attempting to enter or leave the designated blockaded area without authorization may be subject to interception, diversion, or capture. The guidance also warns that the use of force remains an option if vessels fail to comply with instructions issued by coalition naval forces.

U.S. authorities clarified that the blockade is directed at maritime traffic involving Iran and does not restrict the passage of neutral commercial vessels transiting the Strait of Hormuz to or from non-Iranian ports. The strait remains one of the world's most important shipping lanes, carrying a significant share of global crude oil and liquefied natural gas exports.

The latest development follows several days of heightened military activity in the region, including attacks on commercial shipping and continued exchanges between U.S. and Iranian forces. The situation has prompted shipping companies, insurers, and maritime organizations to closely monitor operational and security risks in the Gulf region.

Shipowners, operators, and seafarers navigating the Persian Gulf, Gulf of Oman, and the Strait of Hormuz are advised to remain alert, follow official navigational advisories, maintain close communication with company security officers, and comply with guidance issued by relevant maritime authorities as the security situation continues to evolve.