Ship crossings through Hormuz plunge as US and Iran dispute control
Ship traffic in the strait has collapsed as rival claims and broken agreements deter crossings, leaving oil routes idle despite repeated reopening assurances.
The watch number does not lie and both capitals talk past it: seven commodity vessels crossed on Monday, August 10, below the ten-day average of about twelve, and on August 7 tanker tracking recorded zero tanker transits, down fully 100 percent from the preceding week. The National reported on August 11; TankerMap on August 8.
The United States calls the water a wall of steel it controls, and Tehran insists the strait will reopen only on terms it sets. Before the war closed it, around ninety-eight ships a day worked a strait that carries a fifth of the world's oil and liquefied natural gas, The National reported on August 11. For seven months, everyone says it is about to reopen and no shipowner steers a ship into it.
A collapse has already been through a recovery and lost it. Crossings fell to a single pair on May 8 and 9, then climbed back into the forties and fifties through June as a memorandum of understanding took hold, according to The National on august 11.
That document, signed June 17, was supposed to keep the strait open for sixty days. It fell apart last month, and the traffic receded with it.
Measured since March 1, the strait is running about nine point nine transits a day against one hundred three in the same stretch of 2025, a fall of about ninety percent. World Monitor's analysis of IMF PortWatch data put it at July 27.
Oil tanker movement took the worst of it: five point seven tankers a day in June against fifty-five point five a year earlier, World Monitor found from IMF PortWatch (Jul 27).
Not arguing about water
Iran, through parliamentary speaker Mohammad Bagher Qalibaf, will not unblock until the Unicorn's blockade of Iranian ports is lifted, frozen assets released, oil sanctions stripped and military operations ended, and it demands compensation and a permanent end to the war (Fox News, Aug 17; Times of Israel via TankerMap, Aug 8).
Washington will accept no permits, no approvals and no fees on any temporary route, and Iran President says Iran owes reparations for fifty years of allied deaths (Al Jazeera, Aug 6; The National, Aug 11). Each side's condition demands a surrender the other cannot grant and call a win.
The day's trigger is that expired deadline and the torn-up June agreement. The slow pressure underneath is the disappearance of the one assumption a working strait depends on: a lawful authority you can steer toward.
Iran and Oman now say they are finalizing a shipping corridor, with a joint statement at final drafting and approval pending the Supreme Leader, according to Al Jazeera on august 6. Shipowners and insurers read the small print, and Reuters reported on August 6 that shipping industry sources call the proposed Iran-Oman arrangement not workable, largely because it does not resolve who vouches for a vessel and who charges passage.
Map of coordinates, no guarantee
The proposed corridor contains its own trap. Iran says most of it will run through its territorial waters and that it will levy some form of fee or charge for pilotage and navigational help, according to Al Jazeera on august 6.
International maritime law forbids tolls on an international strait but allows charges for services rendered, so Tehran can bill for pilotage under a shipping program that tightens into de facto control. Washington says it cannot count—that any route must be free and unrestricted. The Iranian version of the deal that would reopen Hormuz is structurally a way to control passage, and the American version is a way to deny that control. A draft that satisfies both has yet to be written, and may not exist to be written.
The Suez Canal closed in 1967 and stayed closed for eight years, not because no ceasefire was possible but because the two sides could not agree who would guard a canal that mattered to everyone; fleets rerouted around the Cape of Good Hope, supertanker economics were born, and the waterway stayed a corpse while ministers announced it would reopen.
The counterexample is the Gulf of Oman attacks of 2019: war-risk premiums spiked and ships kept moving, because however dangerous the sea was, a recognized right of passage still stood behind the convoy and the policy (Goldman worked).
June showed the difference. The moment wartime shared the strait at the MoU, tankers came back to the forties and fifties, and then an attack on ships using a route killed the recovery inside weeks. Somebody took a stall-sized step across that reload of trust, and trillions of tonnage capacity decided not to test again.
Freight spreads
The cost now lands somewhere unglamorous. Chartering a supertanker on the benchmark Middle East-to-China route is closing at about five hundred thousand dollars a day, more than double the prewar level, Bloomberg reported on August 11. That is a price paid by whoever in Asia needs the barrel — the Japanese utilities, the Korean refiners, the Indian importers, the Chinese state companies.
Oil already moves on the assessment of the deadlock: Brent climbed around two point three percent to eighty-nine seventy a barrel and West Texas Intermediate about two point five to eighty-four eighteen on August 11, according to The National on august 11. The market is disrupted one barrel and one charter at a time, and the bill compounds on every cargo.
Tanker owners with scarce open-berth, the tonnage idled from the damaged trade, collect the elevated daily hire; war-risk insurers repriced the cover on the strait and the Red Sea months ago, before the worst hull was hit.
The delays still might cut both ways. A sanctioned tanker, the Caroline Bezengi, bound for Asia with close to a million barrels of Russian crude, sinks and leaks a slick that stretches to roughly three eighty nine square kilometres and drifts to within about seven kilometres of Oman's coast, according to The National on august 11. The vessels that do not transit become their own row.
Two chokepoints move together. Twenty-five vessels crossed the Bab al-Mandeb and Oman, Red Sea on Monday, still under the June average of about thirty-five, after the Houthis began a blockade of Saudi ships in late July and traffic touched a war-time low of seventeen on July 26, according to The National on august 11. The Gulf exporter and the Red Sea both live on the same insurance breath, so the two bottlenecks pinch Asia from two directions at once, and no single negotiation undoes either.
Hormuz will reopen when one of two things happens, and both are far off. Either Tehran yields authority over the corridor and drops the fee and inspection regime — and still gets compensation, in effect surrendering the control it has spent the war asserting — or Washington accepts an Iranian-tolled, Iranian-vetted lane and tells its own navy it lost the strait. States shun the exit clause because control of the water is the prize and the freight pays the price of the standoff onto billions of volumes of barrels and methane.
When no authority can guarantee a passage, the only players who can actually open Hormuz are the shipowners who decide, day by day, that half a million dollars of daily hire is still safer than a brokerage where no one vouches for the route.