Qatar halts maritime activity, threatening 21% of global oil trade

Qatar suspended all sailing and maritime activities from June 29 until further notice, exempting only vessels bound by international maritime conventions, as tensions around the Strait of Hormuz intensify.

"This is a significant escalation in the campaign to control transit through the strait, and it directly threatens the global energy supply chain," said Elena Fischer, geopolitical risk analyst at Edgen.

The move follows more than three months of disrupted shipping through the Strait of Hormuz, where Iran has attacked more than 40 neutral merchant vessels and killed several innocent mariners, according to reports. The strait, which narrows to about 39 kilometers at its most constricted point, handles roughly 130 ships per day carrying about 21% of the world's crude oil.

The suspension raises the stakes for global energy markets already pricing in a prolonged disruption. Brent crude and natural gas prices face upward pressure as traders assess whether Qatar's move indicates a broader coordinated effort among Gulf states to restrict passage — or a temporary security measure that will lift within days.

The Qatari Ministry of Transport announced the suspension in coordination with security authorities, advising owners of leisure boats, fishing vessels, jet skis and all other maritime craft to cease operations immediately. Commercial vessels operating under international maritime conventions received an exemption, the ministry said in a statement.

The Strait of Hormuz has effectively become a contested waterway since the escalation between the US and Iran earlier this year. Iran has used missile and drone attacks, along with sea mines, to deter commercial shipping through the strait. The disruption has already halted most commercial traffic for more than three months, with significant economic consequences for global energy markets.

The Legal and Practical Limits of Control

Under the United Nations Convention on the Law of the Sea, the Strait of Hormuz is an international strait where all ships enjoy a right of transit passage that coastal states cannot suspend. While parts of the strait pass through Iranian territorial waters, the main traffic separation scheme lies within Omani waters.

Unlike the Suez Canal — a 200-meter-wide artificial waterway where Egypt can physically control every vessel — the Strait of Hormuz is about 39 kilometers wide at its narrowest point. This makes enforcement of any toll or restriction far more difficult. The Suez Canal Authority boards pilots onto every vessel and operates a tightly controlled convoy system; no equivalent mechanism exists for the Strait of Hormuz.

What's at Stake for Energy Markets

The last time a major chokepoint faced a sustained disruption of this scale was during the 2019 attacks on Saudi Aramco's Abqaiq and Khurais facilities, which temporarily knocked out 5.7 million barrels per day of production. The current situation involves a broader geographic risk, threatening the daily transit of roughly 17 million barrels of oil and significant volumes of LNG from Qatar, the world's largest LNG exporter.

Qatar's decision to suspend maritime activities — even temporarily — introduces a new layer of uncertainty. If sustained, it could force tankers to seek alternative routes, adding weeks to transit times and raising shipping costs. The 14-point interim deal between the US and Iran, which included a 60-day commitment from Iran to use its "best efforts" to ensure safe passage "with no charge," has done little to restore confidence.

This article is for informational purposes only and does not constitute investment advice.