How the U.S. Is Moving Oil Through the Strait of Hormuz Despite Iran’s Blockade

The clearest conclusion is therefore limited: some oil is moving, but Hormuz has not returned to normal.

How the U.S.-protected corridor works

The reported approach is protected routing rather than a fully cleared waterway. U.S. naval forces and regional partners help make selected tanker movements possible, raising the costs of Iranian attacks and giving shipowners a degree of security that ordinary commercial traffic does not currently have. The U.S. has also reimposed a naval blockade targeting Iranian-linked shipping amid renewed attacks and wider regional escalation.

This arrangement does not eliminate the underlying threat. Iran can still use mines, drones, missiles and small boats to make the passage dangerous, even if it cannot reliably stop every ship. Insurance availability, crew willingness and the risk of sudden escalation remain as important as the physical ability to navigate the channel. Earlier reporting described insurance as unavailable or prohibitively expensive for many vessels.

Why traffic remains far below normal

The corridor is operating in an environment where shipowners continue to avoid risk. In July, only three commodity vessels crossed the strait on one recorded day, the lowest daily total since May, according to shipping data cited by Reuters. Traffic later improved, but it remained below the August daily average and was sensitive to renewed attacks and competing claims over who controls the waterway.

China’s state-controlled COSCO Shipping Energy Transportation and China Merchants Energy Shipping have also reportedly kept tankers away from Hormuz and Bab al-Mandab since late July, collecting cargoes outside the Gulf instead. That decision illustrates the commercial limitation of a military corridor: a route can be technically open while still being too risky for mainstream operators.

What the partial reopening means for Iran

A protected passage reduces Tehran’s leverage because it demonstrates that Iran cannot necessarily impose a complete and permanent shutdown. It also gives Washington a way to keep pressure on Iran while limiting the energy shock created by the disruption.

But Iran’s leverage has not disappeared. The threat of attack can suppress traffic without requiring Iran to intercept every tanker. Even a modest probability of mines, missile strikes or drone attacks can raise freight and insurance costs, delay cargoes and encourage companies to use alternative loading points. The result is coercive power through uncertainty rather than total physical control.

The cost to U.S. energy security

Emergency oil releases have helped cushion the supply shock, but they have also reduced the United States’ reserve against a future disruption. The Strategic Petroleum Reserve was reported at 293.4 million barrels in mid-August, while commercial crude inventories were about 2% below their five-year average. The EIA expects commercial inventories to remain below the bottom of their five-year seasonal range through the end of 2026.

That does not mean the United States is out of oil. It does mean the margin for absorbing another major interruption is thinner. A renewed Hormuz attack, a refinery outage or a broader regional conflict would arrive with less emergency-stock capacity than before the crisis.

Can alternative routes replace Hormuz?

Gulf producers are expanding or using routes that bypass the strait, but these are supplements rather than substitutes.

• Saudi Arabia: The East-West pipeline can move crude from the kingdom’s eastern fields to Yanbu on the Red Sea, allowing some exports to avoid Hormuz entirely. Its strategic value is high, but it cannot replace all Gulf volumes that normally use the waterway.
• United Arab Emirates: The Habshan–Fujairah pipeline provides an outlet to the Gulf of Oman. However, Fujairah infrastructure and loadings have also faced security threats, showing how bypass routes can relocate rather than eliminate risk.
• Iraq: Iraq can use its northern Kirkuk–Turkey corridor to reach the Mediterranean and is exploring additional export mechanisms. Those options are limited by infrastructure, political disputes, security conditions and Iraq’s continued dependence on southern Gulf terminals.
• LNG: Oil can be redirected through pipelines more readily than gas can. Qatar’s LNG exports are especially exposed because the country lacks a meaningful alternative export route.

Pipelines also create fixed targets. Pump stations, terminals and storage facilities can be attacked, and cargoes may still face danger after reaching the Red Sea or Mediterranean. Alternative infrastructure therefore diversifies the system without making it invulnerable.

The most likely near-term outcome

Some Middle Eastern production and exports can recover as protected transits resume, but a rapid return to pre-crisis throughput is unlikely. Tanker owners remain cautious, insurance costs remain elevated and loading facilities and nearby shipping lanes are still exposed.

The stronger reading of the current evidence is partial recovery with recurring interruptions—not a durable reopening. The United States can keep a corridor functioning for a time, but military protection cannot substitute for commercial confidence. Until insurers, crews and shipowners believe the route is consistently safe, Hormuz will remain an energy chokepoint even when some tankers are getting through.