Invest1 publisher2 min readPublished
Vessel trackers put Iran's August crude loadings at least 86% below the pre-blockade rate
Iranian loadings averaged 220,000 to 260,000 barrels a day in August, and the subtraction from world supply comes to about 1.6m bpd. The report carrying those figures leaves out the crude price and the name of the tracking provider.
The Investor · Invest desk
What happened
- Vessel-tracking data cited by cryptobriefing.com shows Iranian crude loadings averaging roughly 220,000 to 260,000 barrels a day in August 2026, more than 80% below the 1.85m bpd shipped earlier in the year.
- The US blockade reimposed on July 14 has sealed the waters south of the Strait of Hormuz to Iranian tankers, and no crude shipment has been confirmed past the enforcement line since mid-July.
- July loadings still averaged around 740,000 barrels a day, because tankers that had loaded before the mid-month cutoff were completing their departures.
- Non-Iranian Gulf exports have climbed to between 8.4m and 10.8m barrels a day by September 2026, a level the report gives with the prior-period baseline left out.
- Dozens of commercial vessels have been redirected and select Iranian tankers have been struck by US forces in enforcement actions running through September 2026.
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Why it matters
- contradiction Tehran's position that it can still export and the tracking data cannot both be right. Every supply number in this story rests on the tracking side, which the report attributes to no named provider.
- constraint The offsetting Gulf figure arrives as a band wider than the barrels removed, so this material cannot settle whether world supply is tighter than it was in June.
- decision Iran's next move is a wellhead one: with onshore tanks filling and no export outlet, the cut has to land on production rather than on shipping schedules.
- exposure Whatever Iran still sells has to clear without crossing the line, so its remaining crude revenue depends on buyers sitting inside a perimeter the US Navy can watch.
The gap between the two loading rates is 1.59m to 1.63m barrels a day [1]. It runs 90,000 to 130,000 above the roughly 1.5m bpd that cryptobriefing.com describes as removed from the market and compares to the entire daily output of Algeria or Angola [14]. The same two figures put the decline at 85.9% to 88.1% [2]. That is above the more than 80% in the publisher's own headline [2].
July's average was 40% of the pre-blockade rate [5]. Measured against July, the first full month under the line came in about 68% lower [3]. The escalation behind the blockade dates to late February 2026, when tensions between the US, Israel and Iran turned into direct strikes on Iranian assets [8].
The non-Iranian Gulf figure is a band 2.4m bpd wide, about one and a half times the volume taken out of Iran [4]. A number with that much slack in it cannot be netted against a 1.6m bpd loss. Cryptobriefing.com reports those exports as having climbed without giving the level they climbed from [12]. The same naval presence is doing both jobs, choking Iranian liftings and facilitating cargoes from Saudi Arabia, the UAE and Iraq [13].
The report skips the crude price entirely [17]. The blockade has been in force since July 14 [3]. Two months of trading sits between the reimposition and these August loadings, and none of it is in this data.
The variable that decides the next print is inventory. Iran's main workaround has been selling crude that was already loaded onto tankers before the line went up [10]. That is a stock, and it drains. Onshore capacity is filling, and cryptobriefing.com's read is that production cuts become unavoidable once the export outlet is gone [11].
The loadings rest on vessel-tracking data from a provider the report leaves unnamed [16]. Tehran's public position is that it can still export crude [9]. The counter-thesis is that Iran is selling at a discount to buyers inside the perimeter and the trackers see very little of it. August captures only what can move to nearby buyers or into floating storage without crossing the enforcement line [15]. On this evidence the volume loss is real and larger than the 1.5m bpd figure being quoted, and the price consequence is unproven. One confirmed transit past the line, or an August average revised back toward July's 740,000 bpd, would break the first half of that [4][5].
What to watch
- Iranian field shut-ins or announced production cuts, the first hard sign that pre-blockade floating storage has been drained.
- Whether a named tracking firm or an official agency publishes Iranian loadings anywhere near the 220,000 to 260,000 bpd range.
- Another brief lift in the blockade of the kind June saw, which would reset the August baseline within weeks.