Iran Ramps Up Ship Attacks in Hormuz as Oil, Gas Flows Rise
Iran has increased the pace of attacks on tankers in the Strait of Hormuz in recent days, just as oil shipments through the world’s most important energy chokepoint approach prewar levels.
UK Maritime Trade Operations has reported nine attacks in the waterway already this month, half the total number it reported for all of September in the Strait of Hormuz and Persian Gulf combined. Last month’s figure was boosted by four assaults in the final two days, underscoring the recent acceleration.
Vessels in Hormuz have been targeted for much of the Iran war, but with varying degrees of intensity. Previous waves of heavy strikes have led to brief reductions in shipments, though those declines have often been offset by higher volumes in subsequent days.
Maritime security officials and shipping executives have said it’s not yet clear whether the latest escalation will mean Hormuz shipments fall. The impact on seaborne gas flows, which also edged up in recent weeks, remains uncertain too.
How much energy flows through Hormuz is vital for the direction of oil and gas prices, particularly ahead of winter in the Northern Hemisphere. Recent price gains have fanned concerns that sustained inflationary pressure could spur higher interest rates across major economies.
In a bid to loosen the market, a number of consuming nations last week announced plans to release millions of barrels of emergency stockpiles, while US President Donald Trump has been studying ways to tame domestic fuel prices ahead of midterm elections.
Any pullback in Hormuz flows would only add to those risks.
Vice President JD Vance, who has played a role in US negotiations with Iran, told Reuters in an interview that any agreement to reopen the strait and end the war would require Tehran to reduce its ability to enrich uranium rather than merely offer assurances of future nuclear drawdowns.
He told Reuters the US was in talks with Iran’s president and foreign minister but added that it was unclear who in that country was making decisions.
Brent crude rose 0.8% to over $101 a barrel in early Asian trading as investors weighed increased flows through the Strait of Hormuz against a pickup in Iranian attacks on vessels.
‘Fear and Uncertainty’
“Iran appears to be seeking to assert greater control over the Strait of Hormuz through one of its most established instruments of coercion: fear and uncertainty,” Dimitris Maniatis, chief executive officer of risk management firm Marisks, wrote in a note. “Iran does not need to stop every vessel; it needs the maritime industry to believe that any vessel could be next.”
Most of the tankers transiting Hormuz do so using a corridor near the coast of Oman. They’ve generally been crossing with their digital signals switched off, leaving traders and analysts poring over satellite images and shipping data to try and work out exactly how much supply is moving.
On Tuesday, Oman’s defense ministry said in a statement that it rescued 10 crew members from the commercial vessel On Peace, which caught fire after being attacked. Ship data show the vessel is an oil tanker.
The flow of oil through the waterway has steadily picked up since the start of summer, and last week some Wall Street banks said shipments were approaching prewar levels. Top commodity traders said this week at the Energy Intelligence Forum in London that they see Mideast flows at around 80% of where they were before the conflict began. That had helped bring Brent crude back below $100 a barrel.
Shipments of liquefied natural gas have been more limited since the war started, but they also quietly picked up prior to the latest attacks. The uptick was slower than in oil, reflecting the fact that LNG is transported in a much smaller fleet of highly specialized carriers that keep the fuel cryogenic.
The latest assaults have also led to a fresh surge in freight rates. The cost of carrying oil from inside the Persian Gulf to China rose to a record $1.3 million a day Monday, according to data from the Baltic Exchange in London. The rate averaged close to $60,000 a day last year and has soared as the number of shipowners willing to cross Hormuz dwindled.
Photograph: An aerial view shows ships anchored off the coast of Khasab in Oman’s Musandam Governorate, near the Strait of Hormuz, on Oct. 2, 2026; photo credit: -/AFP/Getty Images