The Strait of Hormuz, through which roughly a third of the world's seaborne oil once flowed freely, has been reduced to a shadow of its former self — a chokepoint now choked by the conflict itself. In late August 2026, fewer than twenty vessels crossed it on any given day, a 90 percent collapse from pre-conflict norms, as Iranian and American blockades transformed a vital artery into a gauntlet of risk and silence. Ships move with transponders dark, captains weighing survival against commerce, while 23 documented strikes since July remind all who sail there that the danger is neither abstract
Strait of Hormuz traffic plummets 90% as Iran-US tensions escalate
Traffic remains well below normal levels, declining since June
Why would ships turn off their transponders? Isn't that illegal?
It is, technically. But when you're a captain navigating waters where projectiles have struck 23 vessels in six weeks, the legal risk of being invisible seems smaller than the physical risk of being seen.
So the blockade is working—it's actually stopping ships from moving through.
It's doing something more subtle. It's not stopping all ships. It's making the ones that do move go slower, take longer routes, or turn off their tracking. That's almost worse for global markets because it creates uncertainty. You can't plan around a 90 percent collapse if you don't know which 10 percent will actually make it.
The tankers are still moving though. Why?
Because oil still needs to move. Iran is still exporting, the Gulf states are still exporting. But they're doing it with skeleton crews, with ships that are willing to take the risk. The LPG carriers coming out of Iran—those are deliberate. Someone decided those shipments were worth the danger.
What happens if this keeps going for months?
You start seeing real shortages. Not immediately—there are reserves, there are alternative routes, there are ships that will always run these waters. But if 90 percent fewer tankers are moving through, eventually the price of energy rises everywhere. Economies that depend on cheap oil start to feel it.
Is there any sign this will change?
Not in the data. The incidents keep happening. The ships keep turning off their transponders. The only thing that changes it is if one side backs down, and right now neither seems willing to do that.
O Pulso
- Traffic through the Strait of Hormuz has fallen so sharply that a single Sunday saw just four commodity vessels cross — numbers that would have represented minutes of normal flow, not an entire day.
- Some captains are disabling their tracking transponders entirely to avoid detection, meaning even the grim official counts likely understate how thin and desperate the movement has become.
- Twenty-three projectile strikes on vessels since July 6 have damaged hulls, engine rooms, and bridges, turning every transit decision into a calculation of acceptable risk against commercial necessity.
- Shipping companies are abandoning planned routes or diverting through the strait's northern passages, while the Bab el-Mandeb to the south shows its own volatile swings, suggesting disruption is spreading across the region's critical chokepoints.
- Tankers — many carrying crude, refined products, or LPG — still comprise nearly half of remaining traffic, hinting at a market straining to sustain minimal function rather than accepting total shutdown.
- The central question hardening around the data is whether this 10-percent-capacity reality is a temporary shock or a new and lasting baseline for global energy supply.
The Strait of Hormuz, through which roughly a third of the world's seaborne oil once flowed freely, has been reduced to a shadow of its former self — a chokepoint now choked by the conflict itself. In late August 2026, fewer than twenty vessels crossed it on any given day, a 90 percent collapse from pre-conflict norms, as Iranian and American blockades transformed a vital artery into a gauntlet of risk and silence. Ships move with transponders dark, captains weighing survival against commerce, while 23 documented strikes since July remind all who sail there that the danger is neither abstract nor distant. What was once the pulse of global energy trade has become, for now, something closer to a held breath.
The Strait of Hormuz, once the world's busiest energy corridor, has collapsed to near silence. In a single week in late August, only 192 vessels made the crossing — 89 outbound, 103 inbound — representing a 90 percent decline from the traffic levels that prevailed before the conflict erupted in late June. What was once a day's worth of commerce now fills an entire week.
The weekend figures were starker still. Sunday brought just four commodity vessels through the strait. Saturday saw thirteen, Friday sixteen. Some captains chose to navigate with their transponders switched off, unwilling to be tracked — including two very large crude carriers entering the Gulf bound for Iraq and Bahrain. A single VLCC carrying two million barrels of Emirati crude managed to exit on Thursday. The passage has become a place of extreme caution and minimal movement.
Dual blockades — Iranian and American — have forced shipping companies into an impossible calculus. The UK Maritime Trade Operations agency, which monitors these waters, confirmed that vessels were abandoning transit plans or rerouting through northern passages following a series of attacks. Since July 6, the agency has logged 23 projectile strikes on vessels in and around the strait, causing structural damage that forces ships to slow, divert, or turn back entirely.
Of the ships still moving, tankers dominate — accounting for 45 percent of all traffic, with more than half carrying crude oil, refined products, or chemicals. Liquefied petroleum gas carriers make up another quarter of the tanker fleet. Eight very large gas carriers transited over three days, most of them entering empty, while others carried Iranian LPG outbound. The pattern suggests a market attempting to function at bare minimum, with some exports still trickling through.
The disruption has spread beyond Hormuz. The Bab el-Mandeb Strait further south recorded volatile daily counts — 24 vessels on Sunday, 32 on Saturday, 22 on Friday — reflecting real-time uncertainty rippling through global shipping networks. Together, the two chokepoints paint a picture of an energy system operating under sustained, compounding stress, with the world left to wonder whether one-tenth capacity has become the new normal.
The Strait of Hormuz, one of the world's most critical passages for oil and gas, has become nearly impassable. In a single week in late August, only 192 vessels transited the waterway—89 leaving, 103 entering—a collapse so severe that it represents roughly 90 percent fewer ships than moved through before the conflict began in late June. The numbers tell a story of commerce grinding toward a halt.
Over the weekend, the traffic thinned to almost nothing. On Sunday, just four commodity vessels crossed the strait. Saturday saw thirteen. Friday managed sixteen. These are not the figures of a functioning chokepoint; they are the numbers of a passage in crisis. Some captains, unwilling to risk detection, switched off their transponders entirely as they navigated through, making even these sparse counts incomplete. Two very large crude carriers entered the Gulf with their tracking devices disabled—one bound for Iraq, the other for Bahrain. A single VLCC carrying two million barrels of Emirati crude managed to exit on Thursday. The picture is one of extreme caution and minimal movement.
The blockades—Iranian and American both—have created a situation where shipping companies face an impossible choice: risk the strait or divert around it. The United Kingdom Maritime Trade Operations agency, which monitors these waters, reported that vessels were abandoning transit plans or rerouting through the strait's northern passages after a series of attacks. The agency's assessment was blunt: traffic remained well below normal levels, with detected transits approximately 90 percent below what they were before the conflict began.
When ships do move through, they are predominantly tankers. These vessels account for 45 percent of all traffic, with more than half of them carrying crude oil, refined products, or chemicals. Liquefied petroleum gas carriers make up another quarter of the tanker fleet passing through. Eight very large gas carriers transited over three days, six of them empty as they entered the Gulf, while the others carried LPG loaded from Iran and exited. The pattern suggests a market trying to function at minimal capacity, with some Iranian exports still moving but at a fraction of normal volume.
The danger is constant and documented. Since July 6, the maritime operations agency has recorded 23 incidents involving projectile strikes on vessels in the strait and nearby waters. These attacks have caused damage to bridges, engine rooms, and hulls—the kind of structural harm that forces ships to slow down, divert, or abandon their routes entirely. Each incident reinforces the calculus that makes captains hesitant to enter these waters.
The disruption extends beyond the Strait of Hormuz itself. The Bab el-Mandeb Strait, another critical chokepoint further south, saw 24 commodity vessels on Sunday, down from 32 on Saturday and 22 on Friday. The volatility in these numbers suggests uncertainty rippling through global shipping networks, with vessels making real-time decisions about which routes to take and whether to move at all.
What emerges from the data is a portrait of global energy markets under stress. The world depends on this waterway for roughly one-third of all seaborne oil trade, yet it has become a place where commerce happens in fits and starts, where ships move with their lights off, where a week's worth of traffic would have been a day's work months ago. The question now is whether this represents a temporary shock or a new baseline—and how long the global economy can function when one of its most vital arteries is operating at one-tenth capacity.
Citações Notáveis
Traffic remains well below normal levels, with AIS-detected transits approximately 90% below pre-conflict baselines and declining since the June 24 to June 26 peak.— United Kingdom Maritime Trade Operations agency