Iran has introduced a multi-tiered transit regime requiring vessels to obtain permits and undergo vetting to pass through the Strait of Hormuz [1].

This move tightens control over one of the world's most critical maritime chokepoints, where any disruption could impact global energy markets. The Strait of Hormuz handles approximately 20% of global oil trade [4].

The new system mandates that ships follow designated corridors and undergo a vetting process [2]. The government and Islamic Revolutionary Guard Corps (IRGC) naval forces are utilizing island checkpoints to enforce these regulations, reports said [1].

Some reports indicate that the system includes the collection of fees for transit [1]. However, other reports on the mandatory permit system do not mention these charges [3].

Iran is using a combination of diplomatic deals and physical checkpoints to consolidate its strategic position [1]. The vetting process is designed to monitor vessel traffic more closely as ships move between the Persian Gulf and the Gulf of Oman [2].

These developments follow earlier mentions of the system in April 2026 [5]. The Iranian government said the measures are intended to ensure security and generate revenue through the new administrative framework [2].

The Strait of Hormuz handles approximately 20% of global oil trade

By institutionalizing a permit and vetting system, Iran is transitioning from sporadic naval interference to a formal administrative control of the waterway. This allows Tehran to exert systemic leverage over international shipping and oil exports, potentially using the transit regime as a diplomatic or economic tool against foreign powers.