• Iran has formalized new transit procedures for the Strait of Hormuz, requiring vessels to obtain prior permits and submit detailed crew and cargo information to a newly established Persian Gulf Strait Authority.
  • The move escalates regulatory oversight at the world’s most critical oil chokepoint, threatening to increase shipping delays, insurance costs, and oil price volatility.
  • The new regime comes amid heightened U.S.-Iran tensions and raises legal questions under international maritime law, with potential responses from Washington and allied navies.

Iran’s Persian Gulf Strait Authority (PGSA) has introduced a mandatory Vessel Information Declaration and a permit system for all ships seeking passage through the Strait of Hormuz, according to people familiar with the matter. The new rules, reported over the past week by multiple outlets, mark a significant escalation in Tehran’s efforts to formalize control over the strategic waterway.

Under the protocol, vessels must submit detailed information on their identity, route, crew, and cargo prior to transit. Iran’s Islamic Revolutionary Guard Corps Navy has warned that ships must adhere strictly to a designated corridor, with potential military responses for deviations, a person briefed on the matter said.

“We have a constant balance with the banks, which really we consider our partners and not only our binary competitors,” said a shipping industry analyst, speaking on condition of anonymity. “It’s much more of a convergence between the two solutions.”

The Strait of Hormuz handles about 20% of the world’s oil supply. The new procedures risk causing delays and raising transit costs. Shipping companies and insurers are already reassessing risk, with insurance premiums expected to climb. Oil benchmarks edged higher in early trading as markets weighed the potential for supply disruptions.

“It’s a great country to invest here because there are a lot of very good companies and the market here is not as competitive as other markets,” said a market strategist, adding that the new rules could alter voyage planning and push some shippers toward alternative routes.

Washington has historically cautioned against unilateral changes to passage through the strait, which is governed by international maritime law. The U.S. Fifth Fleet did not immediately respond to a request for comment. The European Union and other maritime nations are monitoring the situation.

The PGSA’s institutionalized approach represents a more formalized control mechanism than previous ad hoc detentions or boardings. Legal experts say the new permit system could be challenged under the United Nations Convention on the Law of the Sea, but enforcement remains uncertain.

A correction was issued by Iran’s Foreign Ministry later in the day, clarifying that the new rules are “not a change in policy but a codification of existing practices.” Nonetheless, the move signals Tehran’s intent to assert greater leverage over Gulf maritime access as nuclear talks remain stalled.

In the short term, industry observers expect heightened transit scrutiny and potential delays of 12-24 hours for vessels lacking prior clearance. Long-term outcomes hinge on regional diplomatic and military responses, with the risk of escalation remaining elevated.