Hormuz traffic collapses to ten transits a day while Washington calls the strait fully open

Al Jazeera, citing Kpler on 8 September, reported an average of ten commodity ships transiting the Strait of Hormuz per day over the previous ten days — the lowest level since May, following US and Iranian strikes on tankers. Al Jazeera’s 3 September explainer gave the granular picture: six vessels crossed on the Wednesday, 11 on the Tuesday, five on the Monday, a ten-day average of 13, with other ship-tracking services showing a similar pattern. The same piece noted that President Trump says the US is helping around 30 ships cross daily, and that tracking data suggests the number is far fewer. Al Jazeera’s 7 September live file was headlined on precisely that gap: traffic falling while the US insists the waterway is “fully open.” An aggregator’s summary of Al Jazeera English put last week’s fall at 28 percent, to 77 vessels; that figure should be re-sourced before it is relied on.

The barrel figures and the vessel figures do not tell the same story. TradingEconomics reported on 7 September that roughly seven million barrels a day of crude and refined products were still reportedly passing through the strait, against a normal-state baseline of about 20 million barrels a day and roughly a fifth of global LNG through a channel 21 miles wide at its narrowest. A two-thirds cut in barrels does not reconcile with a collapse in hull counts of the order suggested by the tracking data, and this desk cannot resolve the discrepancy from the material available. IMF PortWatch’s seven-day moving average of transit calls is the citable series for anyone who wants to settle it; an independent tracker of unclear provenance, straits.live, is running its own count and lists Brent at $99.33, which we could not verify and do not endorse.

Qatar’s foreign ministry spokesperson said opening the strait is a priority and that the world faces an “industrial catastrophe” if the crisis continues. Against that, AP reported via CBS that “Iran’s Revolutionary Guard Navy also warned crews of oil tankers near ports in Kuwait and Bahrain to immediately leave their vessels, saying the ships could be targeted in retaliation for the U.S. attacks on Iranian tankers.” That is a single retrieved line; this desk could not obtain the underlying Iranian statement, the issuing command, any NAVTEX or UKMTO advisory, or a response from Kuwaiti or Bahraini authorities. If it holds, it is the first reported Iranian threat in this cycle aimed at commercial tonnage sitting in Gulf Arab ports rather than in transit. Precedent exists for the wider targeting: on 1 September Iran struck US bases in Bahrain, Jordan and Iraq, and Kuwait said its air defences confronted Iranian drones and missiles.

Assessment: The most telling detail of the day is a symmetry nobody has acknowledged. CENTCOM says it told tanker crews to abandon ship before destroying the hulls; the IRGC Navy is reported to have told tanker crews at Kuwaiti and Bahraini berths to do the same. Both sides have adopted the same script for making merchant shipping a legitimate target while claiming to spare its people. That is a norm forming in real time, and it will outlast this exchange. Treat “fully open” and “effectively closed” as equally political. The number that will decide who was right is the PortWatch transit-call series, and it is not being cited by either government.