Hormuz transits at 3% of pre-war levels — both sides claim they closed it
Tanker transits through the Strait of Hormuz fell to roughly 3% of the pre-war baseline in mid-August 2026, with the United States saying it can sustain its naval blockade of Iran indefinitely and Iran's military saying no vessel passes without Iranian permission — each side claiming to be the one closing the waterway
The three lines
- Hormuz tanker transits — around 3% of the pre-war baseline on a weekly average, with at least one day recording zero
- US Treasury secretary promised 'economic isolation like the world has never seen' next week; the defense secretary said the blockade can run 'indefinitely'
- Brent settled at $88.52 (+1.7%) and WTI at $82.40 (+1.4%) on August 14 — both up more than 5% on the week
Key questions
- Are ships moving through the Strait of Hormuz right now?
- Barely. Reported tallies put tanker transits at roughly 3% of the pre-war baseline on a weekly average, with at least one day recording no transits at all. The important thing is that Washington and Tehran explain that same fact differently. The US says its navy is blockading Iranian ports. Iran says the entire strait operates under its permission. The observable result is identical; what differs is which side claims authorship of it.
- What did US officials actually say?
- Two statements landed in the same week. The Treasury secretary said measures beginning next week would be 'a combination of economic isolation like the world has never seen before, and the continued blockade in the Strait of Hormuz that will keep anything from going in or out of the Iranian ports.' The defense secretary said the US military has the capability to maintain a naval presence in the region and can enforce the blockade 'indefinitely.' Both followed the stalling of ceasefire talks.
- What happened to oil prices?
- They rose. On August 14, 2026 Brent settled 1.7% higher at $88.52 a barrel and WTI 1.4% higher at $82.40. Both had fallen about 2% the previous session on hopes of a settlement, and both gained more than 5% across the week. US equities slipped the same day, with several outlets citing higher energy costs among the reasons.
Tankers are not moving through the Strait of Hormuz. That much is not in dispute.
What is in dispute is who is stopping them. The United States says its navy is. Iran says nothing passes without its permission. On August 13 and 14, both sides restated their version almost simultaneously.
1. How much traffic is left
| Item | Value |
|---|---|
| Hormuz tanker transits (weekly average) | about 3% of pre-war baseline |
| Recorded on at least one day | zero transits |
A 97% reduction in the world's most important oil chokepoint means the missing volume either travelled another way or did not travel. Reporting on August 13 described the world drawing down stockpiles to cover the gap.
The tally is a reported estimate whose derivation this article could not verify. The direction and rough magnitude, however, are consistent across outlets.
2. What Washington said — 'indefinitely' and 'never seen'
Two cabinet-level statements landed in the same week.
The defense secretary said the US military has the capability to maintain a naval presence in the region and can sustain the blockade of Iran "indefinitely."
The Treasury secretary described what begins next week as "a combination of economic isolation like the world has never seen before, and the continued blockade in the Strait of Hormuz that will keep anything from going in or out of the Iranian ports."
Both came after ceasefire talks stalled. This page tracked the collapse of settlement expectations in "Hormuz deal odds fall to 9%" on August 11 and set out the numbers then under discussion in "Hormuz transit fees: 7% Iran, 3% Oman, 0% US" on August 12. Whether that fee framework is still on the table is unconfirmed.
3. What Tehran said — 'not without our permission'
Iran's military rejected US claims that vessels are passing freely through the strait, saying no one can pass without Iran's permission.
Set that beside the American statement and an unusual picture emerges.
| Party | Claim |
|---|---|
| United States | We are blockading Iranian ports, and can hold it indefinitely |
| Iran | The strait is under our control; nothing passes without our permission |
| Observable | Transits at about 3% |
Both sides claim to be the one doing the closing. In a typical blockade, one party restricts and the other tries to break through. Here each finds it advantageous to own the outcome — for Washington it is evidence the pressure campaign works, for Tehran it is evidence sovereignty over the waterway holds.
What this article can verify is only the result. The ships are not moving.
4. Carrier rotation — a ship past 250 days
The same day, the Pentagon announced that the USS Abraham Lincoln will be relieved in the Middle East by the USS George Washington.
The Lincoln's deployment had stretched past 250 days because of the war with Iran, with reports of 200 days without a port call. Reporting described deteriorating shipboard conditions and a mental-health crisis among the crew, including a sailor going overboard in early August. The US defense secretary dismissed those reports; US officials were reported as confirming them.
This article verified neither account. What is confirmed is the rotation decision itself. And the minimum it establishes is that this deployment ran far longer than planned.
5. Oil — a one-day reversal
| Benchmark | August 14 settle | Change | Week |
|---|---|---|---|
| Brent | $88.52 | +1.7% | +5%+ |
| WTI | $82.40 | +1.4% | +5%+ |
Both benchmarks had fallen about 2% on August 13, when settlement hopes briefly returned. The "indefinite blockade" remarks reversed that within a session.
The pattern has repeated throughout this crisis. Oil responds less to the blockade itself than to negotiation news. With physical flows already down to roughly 3%, the variable markets reprice daily is not supply — it is duration.
US equities slipped the same day, with energy costs cited among the reasons; that session is covered in "S&P 500 closes at 7,785.76 on August 14, 2026." Why benchmark crude prices differ from one another, and why the barrel quoted in the news is not the barrel Korea actually buys, is set out in "Dubai, Brent and WTI: the difference."
6. What is still open
The content of next week's economic measures is unknown. Only the phrase "never seen before" has been offered; no list has been published.
The Iranian statement's original text and issuing body are unconfirmed. This article uses only the reported substance.
The basis of the 3% figure is unverified. The comparison date and whether the count covers tankers only or all commercial shipping would both change the number.
The largest open question is time. If the blockade can hold "indefinitely" and transits are at 3%, the next figure that matters is how long global stockpiles last. That number is not yet on this page.
Sources
- Seeking Alpha — U.S. to ramp up economic isolation of Iran, eyes indefinite naval blockade
- The Spokesman-Review — U.S. says it can keep naval blockade on Iran 'indefinitely,' vows more economic pressure
- CNBC — U.S. to use economic tactics on Iran 'that have never been seen'; Navy works to relieve troubled carrier USS Abraham Lincoln
- CNBC — Oil prices rise as U.S. threatens 'economic isolation' of Iran
- CNN — August 13, 2026: Strait of Hormuz traffic remains low as world burns through oil stockpiles
- Democracy Now! — Headlines for August 14, 2026
- Bloomberg — Oil Holds Drop as Hormuz Deal Elusive While Ship Attacks Persist