Oil can still move through a waterway that is politically or militarily described as closed. The central issue is whether remaining traffic through the Strait of Hormuz can be sustained safely and reliably.
Iran says the Strait of Hormuz is shut down, while the Trump administration says 9 million barrels of oil a day are still leaving through the waterway between Iran and Oman. The conflicting claims concern oil shipments through the Strait of Hormuz, and they matter because disruptions there can affect global oil supplies and energy markets.
The available information points to a more complicated reality than either a total closure or normal shipping. Oil may still be moving, but the reported volume, the conditions of passage and the durability of those flows remain unclear.
A shutdown does not mean empty waters
A strategic waterway can be called shut down even when some tankers continue to pass. Iran’s declaration can describe its claimed control over the route, the military and security danger of navigating it, or its ability to interrupt traffic.
The Trump administration’s figure of 9 million barrels a day describes a different question: how much oil it says is still getting out. That number could reflect tracked cargo, vessels already moving through the area, or limited shipping under altered security conditions.
Those claims are not necessarily measuring the same thing. The practical test for markets is not simply whether a ship can make one crossing, but whether cargo can move regularly, safely and on terms that shipping companies, crews and insurers will accept.
The 9 million-barrel figure needs context
Nine million barrels of oil a day is a major volume. Yet it would be far below the strait’s recent normal throughput if compared with the U.S. Energy Information Administration’s estimate that about 20 million barrels a day passed through Hormuz on average in 2024.
That 2024 flow represented roughly 20% of global petroleum-liquids consumption and more than one-quarter of worldwide seaborne oil trade, according to the EIA. Using that benchmark only for comparison, 9 million barrels a day would be less than half the usual volume.
That helps explain the apparent contradiction. Iran can portray a sharp reduction in traffic as a consequential disruption. The U.S. administration can point to continuing exports as evidence that the strait has not been completely sealed. Neither position establishes whether the remaining flow is dependable.
Ships moving are not normal trade
A vessel appearing on a tracking map does not show the full condition of the energy supply chain. A tanker may be loaded or empty, waiting offshore, changing its destination, traveling slowly, or facing a delay before it can finish a voyage.
Likewise, a barrel estimate does not show how much oil may be backed up at export terminals, how many carriers are avoiding the route, or whether insurers have changed the terms under which they will cover a voyage. Those details can determine whether a shipping lane is functioning commercially even when vessels are still underway.
The New York Times reported that President Donald Trump said more than 200 commercial vessels had safely traveled through the strait, while also describing oil traffic as far below levels seen before the conflict. The Wall Street Journal reported that Iran and Oman were discussing a temporary channel for ships to pass safely.
A temporary passage arrangement could allow some traffic without restoring ordinary operations. Carriers, insurers and crews may still judge the risk too high, and an arrangement that works for a limited number of crossings may not provide lasting confidence for exporters and buyers.
Hormuz has few easy alternatives
The Strait of Hormuz links the Persian Gulf with the Gulf of Oman and the Arabian Sea. Major Gulf producers rely on it to send crude oil, petroleum products and liquefied natural gas to overseas customers, making it one of the world’s most important energy chokepoints.
Some oil can bypass the strait through pipelines, but those options cannot replace all of the supply normally shipped by sea. Saudi Arabia, for example, has used its East-West pipeline to move some crude to Red Sea ports. The EIA said disruptions around the Bab al-Mandab Strait helped prompt such shifts in 2024.
Pipeline capacity, cargo type and destination logistics all limit how much can be redirected. The vulnerability also reaches beyond crude oil: the EIA said around one-fifth of global liquefied natural gas trade passed through Hormuz in 2024, with Qatar a major source of those shipments.
That means a prolonged disruption could touch electricity and heating markets as well as gasoline and diesel prices. For U.S. households, the effect is indirect because domestic production and refinery operations reduce direct reliance on Gulf imports, but crude oil is priced in a global market.
Risk can raise prices before shortages
Energy markets respond to the possibility of disruption, not only to a confirmed loss of supply. Shipping costs, insurance terms and the risk of delays can all change before a formal closure prevents traffic altogether.
In a June 2025 analysis, the EIA noted that Brent crude rose from $69 a barrel on June 12 to $74 on June 13 amid regional tensions, even though maritime traffic had not then been blocked. The episode showed how concern about future access can affect prices before physical flows stop.
Sustained trouble at Hormuz could feed through to fuel, freight, plastics and other oil-linked goods. The timing and size of any effect would depend on the length of the disruption, the volumes that continue moving and the ability of exporters to use alternatives.
The unanswered question is reliability
Several facts remain unresolved: whether 9 million barrels a day is a current verified flow, how the number is being measured, which countries’ exports it includes, and whether the volume is rising, falling or moving in irregular bursts.
The most meaningful evidence will be sustained tanker movements, independently tracked cargo volumes, freight and insurance costs, official maritime safety notices, and proof that alternative export routes can operate at scale. One vessel passage or one political declaration cannot settle the wider question.
For now, Iran’s shutdown claim and the Trump administration’s 9 million-barrel figure can both point to the same unsettled condition: some oil may be getting through the Strait of Hormuz, but the route may not be operating normally. The distinction between partial access and reliable access will shape the economic consequences.
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