A drone view shows the Malta-flagged tanker Agios Fanourios I, an oil tanker that sailed through the Strait of Hormuz, arriving in Iraq’s territorial waters off Basra, Iraq, April 17, 2026. | Photo Credit: REUTERS

Amid the US's continued blockade of Iranian ports despite the Islamic Republic announcing the opening of the strategic Strait of Hormuz, Iran's Islamic Revolutionary Guard Corps (IRGC) Navy issued new directives restricting maritime movement through the strait, stating that only civilian vessels using Iranian-designated routes will be permitted passage and asserting that all military ships are barred from transiting the strategic waterway.

According to a statement reported by Iranian state media, Islamic Republic of Iran Broadcasting (IRIB), the IRGC Navy outlined four key points regarding navigation rules in the Strait of Hormuz, one of the world's most critical oil transit chokepoints. The four key points follow Speaker of Iran's

Parliament, MB Ghalibaf, slamming US President Donald Trump on X after Trump said that the US blockade on the ports of the Islamic Republic will continue until a full agreement with Iran is completely finalised.

In his post, Ghalibaf asserted that maritime movement through the Strait of Hormuz will be strictly controlled by Tehran, stating that passage will be allowed only through designated routes and under Iranian approval.

According to IRIB, the IRGC Navy stated that civilian vessels are required to adhere strictly to routes officially designated by Iran and further emphasised that safe passage is permitted only for civilian ships operating under Iranian regulations, while military vessels are explicitly prohibited.

"Civilian vessels can only navigate the routes officially announced by Iran. Safe passage is only permitted for civilian ships, according to Iranian regulations. No military ship has the right to pass through the Strait of Hormuz or enter or transit the Strait," the IRGC Navy stated in its statement, as quoted by IRIB.

The IRGC Navy also stated that any maritime movement in the region would require prior authorisation from its naval authorities, effectively placing all traffic under Iranian clearance.

In a more sharply worded warning, the statement linked the restrictions to the two-week "temporary ceasefire" situation, cautioning that if the ceasefire is violated, conditions in the Strait could revert to a "40-day war scenario," during which even commercial shipping could be halted.

This comes after Trump, in a post on Truth Social, declared that the American naval blockade of Iranian ports will persist until a comprehensive peace agreement is finalised with Tehran, despite Iran's move to restore access to the Strait of Hormuz.

"The naval blockade will remain in full force and effect as it pertains to Iran only until such time as our transaction with Iran is 100% complete." He further noted that "this process should go very quickly," the post read.

The Strait of Hormuz, a narrow maritime passage between the Persian Gulf and the Gulf of Oman, remains one of the world's most sensitive shipping routes, with a significant share of global energy exports passing through it.

Published on April 18, 2026