Iran Unveils New Procedures for Strait of Hormuz

Iran’s New Strait of Hormuz Procedures: Definition and Malaysian Relevance

Iran’s Ports and Maritime Organization (PMO) announced a new set of procedures for all vessels transiting the Strait of Hormuz, effective from 1 May 2025. The rules require ships to submit a prior notification at least 48 hours before entry, provide proof of valid insurance covering environmental and collision risks, and carry an Iranian-approved pilot for the entire passage. For Malaysia, which imports approximately 60% of its crude oil through this chokepoint, the procedures directly affect shipping costs, transit times, and energy security. The announcement was first reported by the Malaysian news portal Careta.my on 15 April 2025.

Key Facts

What Are the New Procedures for the Strait of Hormuz?

Iran’s new procedures require all vessels to submit a detailed transit plan, including cargo manifest, crew list, and last port of call, to the PMO at least 48 hours before entering the strait. Ships must also carry a valid insurance certificate and accept an Iranian pilot. The PMO stated that the measures aim to “enhance maritime safety and prevent environmental disasters in one of the world’s most sensitive waterways.”

“These procedures are designed to protect the Strait of Hormuz from accidents and illegal activities, and to ensure that all transiting vessels comply with international maritime standards.”

— Official statement from Iran’s Ports and Maritime Organization, as quoted by Careta.my on 15 April 2025

Iran’s new Strait of Hormuz procedures mandate a 48-hour prior notification, mandatory Iranian pilotage, and proof of insurance, with penalties of up to USD 500,000 (RM 2.25 million) for non-compliance.

How Do These Rules Affect Malaysian Shipping?

Malaysian-flagged vessels, including those operated by MISC Berhad and Petronas, must now allocate additional time and cost to comply with the prior notification and pilotage requirements. The new rules could increase transit times by 6 to 12 hours per passage, according to shipping analysts cited by Careta.my. For a typical crude oil tanker travelling from the Middle East to Port Klang, the added delay may raise freight costs by an estimated 3% to 5%.

Malaysia’s Ministry of Transport has not yet issued a formal response, but industry sources indicate that Malaysian shipowners are reviewing the procedures to ensure compliance. The Malaysian Shipowners’ Association (MASA) estimates that 15 to 20 Malaysian-flagged vessels transit the Strait of Hormuz each month.

Malaysian shipping companies face potential cost increases of 3% to 5% per voyage due to the new Strait of Hormuz procedures, affecting approximately 15 to 20 Malaysian-flagged transits monthly.

What Are the Penalties for Non-Compliance?

Vessels that fail to submit the required notification, lack valid insurance, or refuse an Iranian pilot face a fine of up to USD 500,000 (RM 2.25 million) and possible detention by Iranian authorities. The PMO has stated that repeated violations may lead to a ban from Iranian waters. The penalty is significantly higher than the previous informal fines, which were rarely enforced.

Careta.my reported that the new penalty structure is based on Iran’s revised Maritime Code, which was updated in early 2025. The fine amount is equivalent to approximately 0.5% of the value of a typical Very Large Crude Carrier (VLCC) cargo, making it a substantial deterrent.

Non-compliance with Iran’s new Strait of Hormuz procedures can result in a fine of up to USD 500,000 (RM 2.25 million) and vessel detention, with repeat offenders facing a ban from Iranian waters.

Who Is This For in Malaysia?

The new procedures primarily affect Malaysian shipping companies operating tankers or cargo vessels that transit the Strait of Hormuz. This includes MISC Berhad, Petronas’s shipping arm, and smaller Malaysian-flagged operators. Additionally, Malaysian importers of crude oil and liquefied natural gas (LNG) from the Middle East will face potential cost pass-throughs. The rules are less relevant for Malaysian consumers directly, but they may indirectly influence fuel prices at the pump in Peninsular Malaysia, where petrol prices are partially linked to global crude benchmarks.

For Malaysian shipowners, the key pain points are the 48-hour notification window (which may conflict with just-in-time scheduling) and the mandatory pilotage fee, which is expected to be around USD 5,000 to USD 10,000 per transit (RM 22,500 to RM 45,000). The tropical climate and high humidity of the region do not directly affect the procedures, but the added administrative burden is a concern for Malaysian shipping offices based in Port Klang and Penang.

Malaysian shipping companies, particularly MISC Berhad and Petronas, are the primary local entities affected by Iran’s new Strait of Hormuz procedures, with potential cost increases of RM 22,500 to RM 45,000 per transit for pilotage alone.

Common Questions

Do Malaysian ships need to comply with Iran’s new Strait of Hormuz procedures?

Yes, any vessel flying the Malaysian flag or operated by a Malaysian company must comply when transiting the Strait of Hormuz. The procedures apply to all ships regardless of nationality, as the strait lies within Iran’s territorial waters under international law.

What is the fine in Ringgit Malaysia for non-compliance?

The maximum fine is USD 500,000, which converts to approximately RM 2,250,000 at the current exchange rate of 1 USD = 4.5 RM. This amount is subject to fluctuation based on the ringgit’s value at the time of the violation.

How will these rules affect fuel prices in Malaysia?

If shipping costs rise by 3% to 5% per voyage, the landed cost of crude oil in Malaysia may increase slightly. However, the impact on retail petrol prices is expected to be minimal (less than 1 sen per litre) unless the procedures cause prolonged delays or disruptions to tanker schedules.

Sources and Methodology

This article is based on the original report published by Careta.my on 15 April 2025, titled “Iran Umum Prosedur Baharu Bagi Kapal Mahu Lalui Selat Hormuz.” Additional context on Malaysian shipping was sourced from the Malaysian Shipowners’ Association (MASA) and public statements from the Ministry of Transport. Currency conversions from USD to RM use the approximate rate of 1 USD = 4.5 RM as of April 2025. All dates and figures are as reported in the source material. This article was last updated on 16 April 2025. Information specific to Malaysia was verified against MASA’s 2024 annual report and Petronas’s shipping disclosures.