Nobody can say how many ships cross Hormuz, and the oil market has stopped waiting to find out
The White House says the United States is helping around thirty vessels a day through the Strait of Hormuz. Commercial trackers count between six and thirteen, and one of them says five of the eight it saw were not broadcasting at all. Brent closed Thursday at $95.23, roughly a quarter below its own 52-week high, while the strait stayed shut. On Sunday eight OPEC+ producers meet to set October quotas into that contradiction.
The gap is not a rounding error. Al Jazeera reported on 3 September, citing the marine analytics firm Kpler, that six vessels crossed the strait on Wednesday, eleven on Tuesday and five on Monday, putting the ten-day average at thirteen a day — against President Trump’s claim that the United States is helping around thirty ships cross daily. The Israeli maritime AI firm Windward logged eight transits in the 24 hours to 3 September, four inbound and four outbound, and noted that five of the eight moved without broadcasting AIS, including a very large crude carrier that surfaced from an eleven-day blackout before going dark again on entry. The independent tracker straits.live records six transits on 30 August against a pre-war norm of roughly 85 a day and describes the waterway as effectively closed to commercial shipping. Every one of these counts is structurally low by design: MARAD advisory 2026-006, issued in March, strongly advises US-flagged vessels in the Red Sea and Gulf of Aden to turn their transponders off. Washington has instructed ships to disappear and is now citing numbers that depend on seeing them.
Prices have not behaved as a closed chokepoint implies. Trading Economics has Brent at $95.23 on 4 September, down 0.31 per cent on the day, up 19.86 per cent over the month and 45.39 per cent year on year. Investing.com puts the 52-week range at $58.72 to $126.41, with the month to 4 September averaging $88.83 and peaking at $97.62. Oilprice.com’s live page read $95.11; Fortune’s 9am Eastern snapshot on 4 September read $96.90. The publishers disagree by several dollars because they are quoting different instruments at different timestamps, but the direction is not in dispute: the market has already de-escalated from its own war peak while the strait remains shut. Trading Economics attributes part of that to supply still reaching buyers, with Iraqi exports rising in August and expected to rise again in September. The eight producers who met virtually on 2 August — Saudi Arabia, Russia, Iraq, Kuwait, Kazakhstan, Algeria and Oman among them — completed the rollback of 1.65 million barrels a day of voluntary cuts with a 188,000 bpd September increase, and said nothing at all about the fourth quarter.
Underneath the numbers a doctrine has arrived. Axios reported on 2 September that US drones struck the engine rooms of Iranian government tankers anchored north of the American blockade line, alongside IRGC air defence sites; JINSA’s compilation of that reporting describes the policy as tanker-for-tanker, a strike on an Iranian tanker each time Iran attacks one in the strait. Windward’s own note is the necessary caveat: the tanker strikes are media-reported, with no AIS or imagery confirmation, and the wider package of roughly 100 IRGC-linked targets and Iran’s reported answer of some 25 ballistic missiles and drones are both single-sourced through media reads. Gulf News put the toll of the US strikes at eleven killed and recorded IRGC-claimed attacks on bases in Jordan, Kuwait, Bahrain and Iraqi Kurdistan. Vice President JD Vance, briefing on 3 September, said he would not call it a war and that there would be no talks until Tehran stops shooting at commercial shipping. President Masoud Pezeshkian, at the SCO summit in Kyrgyzstan on 1 September, said Iran would immediately reciprocate if Washington returned to the defunct Islamabad memorandum. Neither side has moved in four days.
Assessment: The transit count is now the only public metric of whether the blockade-and-escort regime works, which is precisely why none of the available numbers can be trusted at face value. Kpler and Windward are commercial vendors with proprietary methods; the cumulative figures — 877 transits since 18 June — originate with the US-led Joint Maritime Information Center and reach the public through United Against Nuclear Iran, a Washington advocacy group. That is a party to the conflict twice over. Neither the White House nor CENTCOM has published a methodology for the thirty-a-day claim, and no one has asked them for one on the record. Sunday is the test of what the market believes rather than what the belligerents announce: a hold on October quotas with the strait shut and Brent at $95 is a political judgement by Riyadh, not a technical one. Watch also whether the capacity-audit language returns to the communiqué. That audit sets the 2027 baselines, and it is proceeding quietly under cover of the war.