The Strait Has Two Clocks

Insuring one crude cargo through the Strait of Hormuz cost about $21 million in late July. That number explains something the military map does not: why the return to normal trade is being scheduled for early 2027 rather than for whenever the shooting stops.

The disruption itself is not in dispute. The U.S. Energy Information Administration estimates that crude oil and petroleum liquids moving through the strait averaged 4.9 million barrels a day in the second quarter of 2026, against 21.6 million in the last quarter of 2025. On one day in late July, ten vessels made the transit. The pre-war norm was 120 to 140.S2,S1

What decides whether a ship makes that passage is less obvious. It is not a navy granting permission. It is an underwriter setting a price and an operator deciding whether to send a crew at that price. War-risk cover for the route was quoted at 7.5 to 10 percent of hull value in late July, up from 1 to 3 percent. “Insurance is therefore coming in as a commercial constraint,” Simone Krummaker of Bayes Business School told Al Jazeera. Shipping analysts describe the same decision in terms of risk appetite and of what operators are willing to ask of their seafarers.S1

The pricing record is the interesting part, because it is not symmetrical. Rates peaked near $140 a tonne in March. By early June they had eased to just above $60 — the lowest since that peak, and still more than three times the five-year average of $18.91. Then they climbed again, to $73.80 and then $77.96. The calmest stretch of this episode did not return the route to anything close to its normal price.S1

That asymmetry is why normalisation reads as a timetable rather than an event. The EIA's August outlook assumes shipments stay severely constrained through August and improve slowly in September, and puts the return to pre-conflict production and trade patterns in early 2027. The agency does not attribute that shape to insurance. The schedule is theirs; reading the premium record into it is ours.S2

Where the bill lands

Before the conflict the strait carried about 20 million barrels a day — roughly a fifth of global petroleum liquids consumption, more than a quarter of seaborne oil trade, and about a fifth of the world's liquefied natural gas trade. In 2024, 84 percent of its crude went to Asia, with China, India, Japan and South Korea taking 69 percent between them. That is a combined figure and says nothing about any single country's exposure. It does say which direction the invoice travels.S3

And the mechanism works route by route rather than region by region. At the same moment, underwriters were pricing Bab al-Mandeb at 0.5 percent of hull value and an alternative Red Sea passage at 0.1 percent. Risk here is drawn on a rate sheet, not on a map.S1

None of which proves that insurance is the cause. There is no open, comprehensive war-risk premium index; every rate above reaches the public through broker quotations compiled by S&P Global and relayed through a single news outlet. Premiums and traffic moving together fits a second reading just as well — underwriters and operators reading the same danger independently, with only one of them publishing a number. The forecasts move too: the EIA raised its third-quarter Brent projection by $11 a barrel in the space of a month.S1,S2

So the thing to watch is not the reopening. It is what the rate sheet does afterwards. If transits climb back toward 120 a day while cover stays near four times its historical price, then the question of when a strait is open has an answer the military situation alone does not supply.S1