The strait is open in name but constrained in practice
One of the world's most consequential waterways has reopened in principle, though not yet in practice. Since a US-Iran ceasefire took hold on June 17, vessels have begun moving through the Strait of Hormuz again — a passage that carries a fifth of the world's oil — yet the pace of recovery reveals how deeply conflict reshapes the arteries of global commerce. Markets have exhaled, crude prices have fallen, and Iranian tankers are moving once more, but the strait remains a place where bureaucratic uncertainty, physical danger, and competing sovereignties slow the return to normalcy. History rarely restores what war disrupts all at once.
- A ceasefire has unlocked the Strait of Hormuz in name, but 172 ships crossing since June 18 is a fraction of the 138 that once passed through every single day.
- Over 200 tankers sit waiting inside the strait and more than 440 cargo ships remain anchored in the Gulf, with 80 percent of tankers stationary — a traffic jam measured in billions of dollars.
- Iran's new permit requirement forces ship owners to seek authorization from a US-sanctioned authority, creating a legal trap that is keeping fleets on the sidelines.
- Confirmed sea mines in the central shipping lanes have pushed vessels toward a narrow southern corridor, while contradictory Iranian statements — closed one day, open the next — leave captains with no reliable signal to act on.
- Brent crude has dropped to its lowest price since the war began, and the US Treasury has licensed Iranian oil sales through August 21, signaling that markets believe the worst is behind them even as the physical reality lags.
- All transiting ships have chosen the northern route through Iranian waters, quietly acknowledging a new geopolitical reality: Iran now holds meaningful administrative leverage over a waterway the West long sought to govern on its own terms.
The Strait of Hormuz is moving again — but only just. Since the United States and Iran signed a ceasefire on June 17, at least 172 vessels have made the crossing, including 42 on a single Saturday. The numbers sound like progress until measured against what came before: in peacetime, roughly 138 ships passed through every day. The current pace is a fraction of that.
The deal brought real relief. The US lifted its naval blockade, Iran pledged free safe passage for commercial vessels for 60 days, and markets responded immediately. Brent crude fell to its lowest price since the war began. At least 30 Iranian tankers departed the Persian Gulf loaded with oil and petrochemicals, and the US Treasury issued a license permitting Iranian crude sales through August 21 — a formal easing of sanctions that had stood for decades.
Yet the recovery is halting. More than 200 tankers were waiting inside the strait on Tuesday, with only a trickle moving. Over 250 tankers and 440 cargo ships remain anchored in the Gulf itself, most of them still. The obstacles are both bureaucratic and physical.
On the bureaucratic side, Iran's Persian Gulf Strait Authority — itself under US sanctions — published new transit rules requiring permits from all passing vessels. Ship owners are reluctant to request authorization from a sanctioned body, and conflicting signals from Tehran have deepened the paralysis. The IRGC declared the strait closed on Saturday following Israeli strikes on Lebanon; Iran's UN ambassador later said it was open; a military source suggested daily crossings would be capped. No one is certain which statement governs.
On the physical side, the Joint Maritime Information Center has warned vessels away from the central lanes due to confirmed sea mines, recommending a narrower southern corridor near Oman's coast. When Iran declared the strait closed on June 20, even that route fell silent. A handful of ships have since resumed using it, but the flow remains minimal.
Notably, every tanker that has transited since the deal has taken the northern route through Iranian waters — the path Tehran prefers — and none have used the southern route recommended by the US and its allies. The ceasefire also commits Iran to working with Oman on the strait's future governance, a concession that quietly reverses years of Western efforts to limit Iranian control over the waterway.
The blockade is lifted, Iranian oil is flowing, and crude prices have eased — but the Strait of Hormuz remains open in name and constrained in practice, suspended between conflict and the normalcy that has not yet returned.
The Strait of Hormuz is moving again, but cautiously. Since the United States and Iran signed a ceasefire agreement on June 17, at least 172 vessels have made the crossing through one of the world's most critical shipping channels. On a single Saturday, 42 ships passed through. The numbers sound encouraging until you consider what normal looks like: before the conflict, roughly 138 ships crossed the strait each day. The current pace is a fraction of that.
The deal itself promised relief. The US lifted its naval blockade, and Iran committed to ensuring safe passage for commercial vessels at no charge for the next 60 days. The market responded immediately. Brent crude, the global oil benchmark, fell to its lowest price since the war began, a signal that traders believed the worst of the supply crunch was over. At least 30 Iranian tankers have departed the Persian Gulf laden with oil and petrochemicals since the agreement. On Monday alone, five previously sanctioned vessels carrying up to four million barrels moved through the strait. The US Treasury issued a license allowing Iranian crude sales until August 21, formally easing sanctions that had stood for decades.
Yet the recovery remains halting. Ship-tracking data shows more than 200 tankers waiting inside the strait on Tuesday, with only a trickle moving. Over 250 tankers and 440 cargo ships remain anchored in the Gulf itself, most of them stationary. More than 80 percent of the tankers are not moving. The reason is not a lack of cargo but a tangle of obstacles that persist even after the ceasefire.
The first obstacle is bureaucratic. Iran's Persian Gulf Strait Authority published new transit rules on Friday: no vessel may pass without a permit issued by the authority. The PGSA itself has been sanctioned by the United States, and ship owners appear reluctant to request permits from a sanctioned entity. Martin Kelly, a crisis management analyst, noted that this regulatory uncertainty is keeping owners on the sidelines. Meanwhile, conflicting signals from Tehran are adding to the confusion. Iran's Islamic Revolutionary Guard Corps declared the strait closed on Saturday in response to Israeli strikes on Lebanon, though some traffic continued. Days later, Iran's UN ambassador said it was open, while a military source told local media that daily transits would be capped. Ship owners are waiting to see which statement holds.
The second obstacle is physical. The Joint Maritime Information Center, a multinational group that includes the US, has warned vessels to avoid the central shipping lanes due to sea mines. Two mines have been confirmed so far, and active clearance operations are underway. The center recommends a narrower southern route closer to Oman's coast, which it says has been cleared. But when Iran declared the strait closed on June 20, even that narrow corridor fell silent. A few tankers have resumed using it—a Norway-flagged ship heading to Singapore, a Liberia-flagged vessel bound for Taiwan—but the flow remains minimal.
There is also the question of which route ships choose. All the tankers that have transited since the deal have used the northern route through Iranian waters, the path Iran prefers. None have taken the southern route recommended by the US and its allies. This preference reflects the new reality: Iran now has leverage over the strait's administration. The ceasefire agreement commits Iran to working with Oman to define the future governance of the waterway, a significant concession that reverses years of Western attempts to limit Iranian control.
Brent crude has fallen, the blockade is lifted, and Iranian oil is flowing again—but the Strait of Hormuz remains far from the open waterway it was before the war. The waiting tankers, the conflicting statements, the mines, and the new permit requirements form a web of friction that will take time to untangle. For now, the strait is open in name but constrained in practice, a halfway point between conflict and normalcy.
Notable Quotes
There has been an increase in normal trade too, but ship owners remain cautious about new Iranian permit requirements and regulatory uncertainty— Martin Kelly, EOS Risk Group
Tankers resumed passing through the southern corridor at the end of last week, but when Iran declared the strait closed on Saturday the transits stalled— Jemima Shelley, United Against Nuclear Iran
The Hearth Conversation Another angle on the story
Why is 172 ships in a week considered slow if the deal is supposed to have fixed things?
Because before the war, 138 ships crossed every single day. We're talking about a tenth of normal volume spread over a week. The deal removed the blockade, but it didn't remove the fear.
What are ship owners actually afraid of?
Three things at once. First, Iran now requires permits from an authority the US has sanctioned—so owners worry about legal exposure. Second, there are mines in the main shipping lanes. Third, Iran keeps sending mixed messages about whether the strait is even open. When you're moving millions of dollars of cargo, you don't move until you're sure.
But oil prices dropped. Doesn't that mean the market believes things are getting better?
It does. The price fell because traders think supply will increase. But traders and ship captains operate on different timelines. Traders bet on the future. Captains need certainty today.
Why would Iran insist on permits if it promised safe passage?
Control. The ceasefire gave Iran a seat at the table for administering the strait. The permits are how it exercises that new authority. It's not necessarily hostile—it's Iran asserting sovereignty over waters it's always claimed.
Are the mines real or a pretext?
They're real. Two have been confirmed, and clearance is ongoing. But they're also convenient—they give cautious ship owners a legitimate reason to wait rather than risk it.
So when will traffic return to normal?
Not soon. The mines need clearing, the permit system needs to prove it won't be weaponized, and Iran needs to stop contradicting itself. That's weeks at minimum, probably months.