UKOilWatch — UK Fuel Reserve & Price Intelligence

Update — Fri 5 Sep 2026

First, the 31 August incident in full. Late on 31 August two laden very large crude carriers were struck by projectiles near Khasab, Oman — the Saudi-flagged Sidr and the Liberian-flagged Senegal Prosperity, the latter controlled by South Korea’s Sinokor Maritime. Each had loaded about 2 million barrels of Saudi crude at Juaymah, on Kpler data cited by Reuters. Operator Bahri confirmed on 2 September that two Filipino seafarers aboard the Sidr were killed; Philippine authorities separately reported 16 Filipino crew aboard, of whom 14 were unharmed. The Senegal Prosperity’s crew was evacuated and the vessel was reported dead in the water and listing. No spill or environmental impact has been verified; a laden, listing vessel is carried here as an environmental and salvage watch, not as an observed loss.

Then the United States started sinking tankers. On 5 September US forces struck three Iranian crude carriers after the IRGC fired ballistic missiles at a US aircraft carrier and a guided-missile destroyer; both evaded and CENTCOM reported no American personnel harmed. CENTCOM says the Downy, off Kharg Island, and the Stark 1, near Jask, were “permanently disabled”, and that the Kylo, also known as Noxen, was hit in the Gulf of Oman after its crew was directed to abandon ship. Adm. Brad Cooper: “If you shoot at two of our ships, we will impose an even higher economic cost — taking out three of yours,” adding that the US would if necessary “destroy Iran’s limited and exposed oil fleet”.

What that does and does not establish. Tanker capacity has been removed and oil-export logistics are being targeted directly. It is not a measured loss of crude: Kylo was unladen on CENTCOM’s own account, the cargo status of Downy and Stark 1 is not stated by any source we have read, and “permanently disabled” is CENTCOM’s wording, not a declared constructive total loss. Kharg Island’s terminal was not struck — the Downy was hit near it, which raises export-infrastructure risk without being damage to that infrastructure. This is also not the first such strike: a tanker-for-tanker policy was already reported in force from 1 September, so today is escalation and confirmation of it rather than its first use.

No flow effect is demonstrated yet, and no price reaction is in our figures. Every transit and loading series we could attribute predates these strikes, and trackers disagree with one another for the same days, so nothing is merged into a trend here. Crude futures were closed on Saturday: $96.28 is the settled 4 September close from this site’s own session feed and contains no reaction to the 5 September event. Oil-export logistics are now being deliberately targeted as an instrument of retaliation. That is a material escalation in disruption risk, but it is not yet evidence of an incremental physical crude-supply loss from the 5 September strikes.

Update — Tue 1 Sep 2026

The oil price is where the attention goes. The borrowing costs are where the consequence accumulates. Renewed US–Iran strikes lifted Brent back above $91, extending Monday’s gains: $91.76 at 07:50 UTC, up 1.4% on Monday’s $90.49 settle. Borrowing costs moved with it and further. Japan’s ten-year yield touched 3% for the first time since 1996, the US ten-year reached about 4.78% intraday — its highest since January 2025, after a 4.72% close on Monday — and French and German yields sat near fifteen-year highs. Corrected later the same day: intermediate readings of $88.79 and $89.31 published here earlier were artefacts of our Brent feed, not market moves. Stooq was unavailable all session and the Yahoo fallback served stale prints. Withdrawn.

Repricing, not funding failure — and not oil alone. Demand at Japan’s ten-year auction was broadly in line with its twelve-month average: bid-to-cover 3.29 against 3.26, stronger than the previous auction’s 2.56. The market is charging more for capital, not refusing to supply it. Two drivers sit behind the move: energy-driven inflation, and an explicitly hawkish Federal Reserve — chair Warsh said the Fed will ‘have work to do’ on inflation, and markets moved to price a greater than 65% implied probability of a September rate increase. The FSB’s 31 August letter to the G20 listed energy-driven inflationary pressure alongside sovereign-debt fragility, private-credit vulnerability, leverage and stretched valuations; the causal chain from energy to yields is our reading of that evidence, not a conclusion the FSB stated.

The strait still fails the traffic test. Kpler counted about five commodity vessels on 31 August — four entries, one exit — against a ten-day average near 14, with no liquid tankers among them; the arrivals were an empty handy-sized gas tanker routed via Iranian waters and three laden dry bulk carriers. That supersedes the ten-vessel reading for 26 August. Transponder-off vessels are excluded, so it stays a floor rather than total throughput. On 1 September UKMTO reported a tanker struck by three projectiles 17 nautical miles east of Khasab, Oman — unclaimed, and no attribution made here.

The through-line. Britain now pays twice: once at the pump, where duty rose 1p on 1 September, and again in the cost of the capital that funds the infrastructure meant to make the fuel system more resilient. A crude price can fall back next week; a repriced yield curve is a standing charge.

Update — Tue 25 Aug 2026

The crude price and the physical strait moved in opposite directions on the same day. Washington announced its toughest Iran sanctions package to date on Monday, Iran having warned beforehand that it could seize ships in Hormuz — and Brent fell about 2.5% to around $92 regardless (CNBC, 24 August). It has kept falling: $89.99 at 08:02 UTC on Tuesday, down a further 2.37% and back below $90 for the first time since 16 August. Hours later, at 01:31 UTC on Tuesday, an oil tanker was reported struck by an unknown projectile nine nautical miles north-east of Ash Shishah, Oman (Arab News and TradeWinds, attributing UKMTO; the agency’s own advisory page was not reachable to us) — engine room damaged, vessel disabled, crew safe, no claim of responsibility and no attribution made here. A market becoming less alarmed and a sea lane becoming more dangerous are not contradictory; they are the two tracks this page has been separating since March.

The clearest public account yet of why crude moves and diesel does not. At a Stavanger conference on Monday, TotalEnergies chief executive Patrick Pouyanné put the extra cost of a Hormuz round trip at $20 million for a VLCC — about $10 a barrel over 2 million barrels, which discounted Gulf crude absorbs. For refined products he cited a $50-a-barrel surcharge because product cargoes are far smaller, adding that ‘you don’t have a single tanker of products moving out of Hormuz’. Carry both as his figures. $20 million spread over a 300,000–350,000-barrel product cargo would imply roughly $57–$67 a barrel, so the $50 is not a transposition of his own crude arithmetic; and no independent comprehensive vessel count has been published to support ‘not a single tanker’. The mechanism — per-barrel risk cost rising as cargo size falls — stands regardless of the exact figure.

Three counts, three methods, one strait. Lloyd’s List Intelligence recorded 73 all-vessel transits in the week to 16 August; Reuters counted seven commodity ships on 21 August with no VLCCs or LNG carriers; IMF PortWatch’s satellite-AIS series puts the strait at a seven-day average of 3.6 vessels a day to 16 August, about 4% of its 2023 baseline. These measure different vessel populations over different windows by different methods. They are not three readings of one number, and every one of them is a floor rather than a throughput measurement while transponders stay off.

The through-line. Cheaper crude is not cheaper diesel. Britain’s exposure now runs through the product market and the cost of moving fuel, not through the barrel price the headlines quote.

Update — Thu 20 Aug 2026

Crude has round-tripped. The product market has not. Brent has risen five straight sessions — $87.07, $88.52, $90.87, $91.02, $91.62 and $93.92 at 09:20 UTC Thursday — its highest since late July. But the barrel is no longer where the pressure is. On 18 August our Atlantic-Basin proxy put the distillate-only crack at $95.81/bbl against a blended 3-2-1 of $62.52 and a gasoline-only crack of $45.87: the scarcity premium sits in middle distillates, not in crude. Europe is feeling it as an import problem — diesel imports fell to about 1.56 mb/d in July from 1.97 mb/d in January (Kpler via Reuters), while jet imports rose, and European diesel cargoes overtook jet in price this month for the first time in over a year (LSEG via Reuters).

A second signal points the same way. EIA’s Europe Brent Spot has closed above the ICE futures settle on all twelve overlapping sessions from 3 to 18 August, averaging $4.82/bbl and ranging $1.56 to $7.20. Physical spot Brent has been trading above the screen for a fortnight — buyers paying up for barrels they need now, not repricing expectations for months ahead. That is a different benchmark from Argus Dated and the two are not interchangeable, but the direction is unambiguous.

Hormuz has not recovered. Kpler recorded five commodity-vessel transits on Saturday 15 August and none on Sunday, against 31 the previous weekend and a pre-war norm above 130 a day. Three ADNOC vessels were attacked in under a week. Reuters cautions transits may pass undetected with transponders disabled, so treat these as a tracking-observed floor, not a throughput measurement.

And the workarounds are being taxed. Russia’s Novorossiysk halted crude loadings after a drone strike on 14 August and resumed on the 16th — about two days, not the 700,000 b/d of exposed capacity a headline might imply. Saudi Aramco’s September allocations meanwhile expose a gap between the quoted price and the delivered cost: the discount is calculated for Ras Tanura loading inside the Gulf, while buyers redirected to Yanbu or Sidi Kerir carry the transfer and rerouting cost themselves.

The through-line. A fall in Brent would help Europe. It would not guarantee an equivalent fall in diesel. The question is shifting from whether Europe can find enough oil to whether it can find enough usable fuel after that oil has been refined.

Update — Tue 11 Aug 2026

The peace trade broke — and the throughput went down, not up. Barclays estimates combined crude and refined-product net exports through Hormuz averaged just 3.0 mb/d in the week ending 7 August, against 4.4 mb/d the week before. That is the number we would put above the diplomacy: while the corridor design advanced, the barrels actually moving fell by roughly a third. Iran now says the talks are deadlocked, listing sanctions relief and the unfreezing of Iranian assets among its conditions for a full reopening, and President Trump told Axios the US is ‘only semi-negotiating’. Read the crude move as a round trip rather than a breakout: ICE Brent settled $79.36 on 4 August, then rose for five straight sessions to $87.72 on Monday (+4.99%) and about $89.4 on Tuesday — but on that same futures series Brent settled $90.12 on 31 July and peaked at $100.69 on 23 July, so today is roughly where the month ended and still about 11% below the July high. The market has given back a few days of reopening optimism and no more. The persistent deterioration is downstream. European diesel refining margins rose nearly 10% in a single session on Monday and US ULSD futures gained 7.4% to $4.19/gal after Ukraine struck the Taneco refinery at Nizhnekamsk in Tatarstan — one of Russia’s largest, about 1,200km inside Russia, with 13 killed and 78 wounded per regional authorities, nine of them in a hostel — and the Houthis hit Jazan again, pushing its restart from 15 to 30 August. One correction worth carrying: Russia’s gasoline export ban runs outright to 31 January 2027, but the diesel and gasoil restrictions carry producer exemptions from 1 September — the diesel side loosens in under three weeks, and a flat ‘diesel banned to January’ reading overstates the loss. Crude has gone roughly nowhere in a fortnight while the product market kept tightening: the stress has migrated from the barrel to the fuel.

Update — Thu 6 Aug 2026

The escape corridor has reached 81 degrees north. Nearly twenty sanctioned Russian tankers are being routed north of the Severnaya Zemlya archipelago — within about 500 nautical miles of the North Pole, on one of the most northerly commercial passages ever attempted — because ice has blocked the traditional Vilkitsky Strait gateway (gCaptain). Only four vessels on earth are operating farther north, all icebreakers or research ships. Roughly the whole of last season’s 13.1-million-barrel eastbound Arctic crude volume has already departed in this season’s opening weeks — and the risks are keeping pace: one tanker has already reversed course on heavy ice, and three nuclear icebreakers are escorting the traffic. When the safest remaining detour runs within sight of the Pole, the detour ladder is close to fully extended. Meanwhile Europe’s rivers will get little help: this week’s rains will be sporadic and largely miss the drought regions (‘still not enough to make much impact on the low river flows’ — MetDesk), Vienna hit 40.8C, a national record for Austria, and ECMWF models point to a possible fifth major heatwave building by early next week. The Rhine sits at its 1880 record low, Paks is running on a single turbine at just over 10% of capacity after the announced complete shutdown was narrowly avoided, and the restrictions on barges and riverside power generation extend into the deepest weeks of the dry season.

Update — Wed 5 Aug 2026

The blockade is visibly working — which is exactly why a deal is being drafted. Some 50 laden Iranian tankers are idling along Iran’s coast — up from 36 when the US blockade was renewed on 14 July — and advocacy group UANI says it has tracked no laden Iranian crude tanker successfully exiting the Gulf of Oman since then (transponder-off departures possible). Iranian crude in floating storage is up 14% in a month to 135 million barrels (Vortexa), Iranian Light discounts have narrowed to ~$4 under Brent as sellers hold cargoes, and the Shandong refiners who buy most of it are running at ~48% of capacity. Set that against Monday’s reporting that the US has spent ‘virtually all’ of its long-range ATACMS/PrSM missiles, and the shape of the week is clear: both sides are visibly depleting — Iran’s export revenue and floating-storage pool, America’s deep-strike and interceptor stockpiles — and that mutual depletion is what has put a drafted interim proposal on the table. Qatar says a text to free up Hormuz shipping exists; Bloomberg reports both US and Iranian officials sounding optimistic. Oil has priced much of it already: WTI below $75, Brent below $79, down more than 11–12% on the week. A drafted proposal is not a signed one — and the physical strait remains blockaded, thin and abnormal until it is.

Update — Tue 4 Aug 2026

The war is running down its missiles, and the rivers are running down their water. Reuters reports, citing three people familiar with internal data, that the US Army has used ‘virtually all’ of its long-range ATACMS and Precision Strike Missiles in five months of war with Iran — with roughly 65% of Patriot interceptors and at least 38% of THAAD interceptors expended (CSIS estimates said to match internal figures) and a little under half the global Tomahawk supply used (one source; unverified by Reuters). The White House and Pentagon dispute any readiness gap, and CENTCOM has reloaded from stocks elsewhere. This is the material constraint beneath the diplomacy: it pushes Washington toward the negotiated pause the market is already pricing — but it also thins the interceptor shield that Gulf oil infrastructure has sheltered behind. Meanwhile the Rhine hit its lowest level since records began in 1880 — 21cm at Kaub, forecast 17cm by Saturday, with the seasonal bottom still ahead. Diesel barge freight from Rotterdam to Karlsruhe is the costliest since Bloomberg’s data began in 2009; Shell is moving Rhineland deliveries to rail and truck; and Romania’s military detonated a rock formation in the Danube to push water toward the Cernavodă nuclear plant. Two depletions, one pattern: the buffers — munitions stockpiles and river depth alike — are being spent faster than they are being replaced.

Update — Mon 3 Aug 2026

Oil is falling on talks that Iran says are not happening. Brent dropped about $4.65 to $83.28 and WTI roughly $5.20 to $79.47 on Monday morning after President Trump said negotiations with Iran would take place that day — but Iran’s Foreign Ministry says no US–Iran negotiations are under way. Tehran confirms only discussions with Oman over temporary safe passage through Hormuz, and insists the strait cannot return to normal while US military action continues. The fall is expectations, not restored exports: Hormuz remains thin (two laden VLCCs out late last week), two Saudi tankers crossed Bab el-Mandeb as the week opened, and neither route is at reliable pre-war capacity. OPEC+ formally approved its ~188,000 b/d September increase — completing the 1.65 mb/d voluntary-cut rollback, with ~2 mb/d of older cuts running to end-2026 — largely theoretical while producers sit below quota for want of safe export routes. And the infrastructure wars did not pause for the diplomacy: Ukraine says its weekend wave targeted the Saratov refinery, Engels airbase and a Kaluga oil depot (no confirmed refinery shutdown), and at least eight deaths were reported. A market de-escalation, not yet a physical one — and it could reverse quickly if Monday produces no concrete framework or measurable increase in tanker traffic.

Update — Sun 2 Aug 2026

A negotiating pause, not a ceasefire. President Trump says he has cancelled or postponed the planned strikes on Iranian energy targets while Middle Eastern governments try to complete a deal covering Iran’s nuclear programme and the “immediate, complete and total” reopening of Hormuz. Israel is said to have joined; Iran has not publicly accepted — and nothing verified shows normal commercial traffic resuming. The water stayed dangerous regardless: after Saturday’s disabled tanker, the master of a second vessel reported an explosion close alongside ~21nm north-west of Khasab (no damage; attacker unidentified). Iranian drones reached Kuwait, damaging facilities whose nature is undisclosed. The biggest European development is on the Danube: Hungary is shutting the entire Paks nuclear plant — nearly half its electricity, the first complete shutdown in 44 years — for lack of cooling water, possibly for weeks [update, 6 Aug: the complete shutdown was narrowly avoided — a temporary rise in the Danube kept one turbine online at 240 MW, just over 10% of capacity], with demand curbs prepared and imports costed in the hundreds of millions. One durable positive: Turkey and Iraq extended the Kirkuk–Ceyhan pipeline deal by a year with reserved capacity up to 750,000 b/d against ~170–180,000 flowing — a Hormuz bypass secured, on conditions. OPEC+ has an in-principle September increase of ~188,000 b/d, then a Q4 pause — targets, not delivered barrels. Markets closed; Friday’s $90.12 Brent stands.

Update — Sat 1 Aug 2026

A tanker was disabled by an unknown projectile near the entrance to the Strait of Hormuz early Saturday — about 11 nautical miles north-east of Limah, Oman: engine room damaged, the vessel “not under command”, no casualties or pollution initially reported (UKMTO). Its identity, cargo and the party responsible are undisclosed, and we do not attribute the attack. Separately, Reuters — citing CBS News — reported late Friday that the US and Israel are planning a possible bombing campaign against energy-related targets inside Iran, potentially this weekend; President Trump had not given final approval when the report was published, and no target set is specified. That is reported planning, not an operation — and no new Iranian fixed energy facility has been verified hit. The strait remains in its strange in-between state: the IRGC claims two tankers hit and four turned back (unconfirmed), while tracking showed two laden VLCCs transiting — Hormuz is permitting, or failing to prevent, individual passages; it has not returned to normal navigation. July closed with Brent at $90.12 and WTI $84.67 — monthly gains of 24% and 21%. And the conversion story deepened: Russia has begun importing petrol from Morocco (~30,000t of AI-92, unloading at Murmansk), its fourth fuel-supply country, with output near 65% of summer consumption.

Update — Fri 31 Jul 2026

The crisis has moved downstream. Brent eased to about $87.59 (WTI ~$82, both still up roughly 20% on the month) — but the product market set records: European diesel cracks at an all-time $74.66/bbl, US diesel cracks at $93.44, jet above $80, and European diesel inventories at their thinnest since 2022, with total ARA product stocks at a 2014 low (corrected 1 Aug). The refining losses explain it: Saudi Arabia’s ~400 kb/d Jizan refinery has been shut since 27 July (last week’s “no confirmed outage” has resolved the wrong way), part of Kuwait’s Al-Zour is down, Russia’s Ryazan has halted processing (~2 weeks, Reuters sources) and Perm lost a unit carrying ~34% of its capacity — and Moscow has extended fuel-export restrictions to 31 January 2027. Hormuz ran two vessels Thursday, both ballast, both inbound — the directional signal we flagged, at a scale that is a flicker, not a recovery; Bab el-Mandeb improved to 25 crossings, with AIS-dark transits keeping every count a minimum. And the strain is reaching the last detour: a drone hit two gas vessels at Egypt’s Damietta port as SUMED loadings surge. The world does not simply have an oil-supply problem; it has an oil-conversion-and-delivery problem — crude exists, and the system that turns it into fuel in the right place is what is being degraded.

Update — Wed 29 Jul 2026

The pause was a lull, not a settlement. Saudi Arabia said its armed forces, coordinating with US Central Command, carried out joint strikes on Iran-backed groups in eastern Iraq after drones launched from Iraqi territory targeted oil facilities in the kingdom’s Eastern Province — Saudi air defences intercepted those drones and no damage to the facilities has been reported (a separate event from the Houthi strikes near Jizan on 24–25 July). CENTCOM said the groups were behind more than 30 drone attacks in 72 hours; Iraq’s Popular Mobilisation Forces said several headquarters were struck, reporting casualties. Iran denied involvement; Iraq ordered an investigation (Reuters). Oil retraced its fall — Brent back to about $86.79, WTI $81.91 — and Hormuz thinned again to just five commodity vessels on Tuesday. The physical premium, meanwhile, has collapsed rather than persisted: Argus North Sea Dated has fallen from about $103 on 24 July to roughly $86 on 28 July, back in line with the screen. The durable story is the shrinking margin for error — the US Strategic Petroleum Reserve is down to about 307.7 million barrels, its lowest since March 1983, while US commercial stocks stay below seasonal norms, refineries run at 96.1% of operable capacity and US diesel sits above $5.31/gal. Not a shortage — a system with less room to absorb the next shock.

Update — Mon 27 Jul 2026

The shooting has paused; the shipping crisis has not. Brent fell more than 6% on Monday to about $90.58 (WTI ~$83.51) after the US and Iran held fire for a second consecutive day and Oman pressed to restore a ceasefire framework — roughly $11 of war premium out since Brent hit about $102 on 23 July, lifting equities and bonds. But the physical system has barely moved: Hormuz ran in single digits over the weekend (about 7 vessels Friday, 3 Saturday all dark, 7 Sunday; Kpler), and Bab el-Mandeb fell to just 11 crossings on Sunday, the lowest in months, after the Jizan/Yanbu attacks. Physical crude hit two-month highs last week and traders reckon ~10 mb/d of Middle Eastern barrels is still displaced — oil is falling because the market thinks the disruption can be managed, not because the barrels have returned. This is market de-escalation without physical normalisation: the nuclear dispute is unresolved, the US naval blockade still operates, and Hormuz has not reopened. Europe’s winter-fuel deficit is untouched — gas storage about 55% (lowest since 2021), diesel stocks the lowest since 2022, European diesel margins near a record ~$65/bbl.

Update — Sun 26 Jul 2026

The war has begun attacking the infrastructure built to bypass the war. On Saturday the Houthis fired at Aramco installations at Jizan and Yanbu — Saudi Arabia’s Red Sea outlet for crude routed west to avoid Hormuz. Reuters-verified footage showed a column of smoke from the direction of the ~400 kb/d Jizan refinery and trading sources reported possible damage to fuel and oil storage there; Aramco has confirmed no outage or production loss, and the Yanbu-bound missiles were reportedly intercepted with no confirmed damage. The Houthis have declared a blockade of Saudi Arabia and warned all its oil facilities could be targeted. Counter-signal: the US paused its strikes on Iran after a 13-night run, with no Gulf-state retaliation over the weekend — the naval blockade stays in force and Washington is reportedly holding back while a China-initiated diplomatic push continues. That is a political opening, not a reopened chokepoint: Hormuz still ran only about three transits a day on 22–24 July (Kpler), though one laden VLCC with ~2m bbl of Basrah crude did exit. Ukraine’s drone campaign widened to Russia’s Caspian (Lukoil’s Filanovsky platform) and Siberia (a Tyumen refinery fire), and Moscow is extending its gasoline-export ban to end-2026. European gas is repricing too — TTF near €63/MWh and UK gas above 150p/therm, about four-month highs, lifting the cost of the winter storage refill. Markets were closed Saturday; Brent settled Friday at $96.78 (−3.9% on a China-talks report, ~+10% on the week) — a close struck before the weekend attacks, so any Monday rebuild of the risk premium is an inference, not a confirmed move.

Update — Tue 21 Jul 2026

The interim 17 June truce has broken down and US strikes have run a tenth consecutive night. The Red Sea threat has turned concrete: Yemen’s Houthis emailed shipowners declaring an embargo on all ships calling at Saudi ports (Bloomberg), directly threatening Yanbu — the bypass Saudi Arabia has used while Hormuz runs at a near-halt (about four commodity crossings Monday, most dark). Brent touched $91.42 Monday, its highest since 11 June, before easing to about $89 on hopes of a fresh ceasefire — a retreat on diplomacy, not restored supply. European low-sulphur gasoil hit a record premium near $60/bbl over Brent.

Update — Thu 16 Jul 2026

The war has widened on two fronts. US strikes reached Tehran for the first time in this round overnight — alongside Bandar Abbas and coastal missile sites — and US forces disabled a blockade-running oil tanker (the Curaçao-flagged Belma) in Hormuz as it tried to reach Kharg Island, the first vessel stopped by force since the full Iran-only blockade resumed. Iran retaliated against US-allied Bahrain, Kuwait and Jordan. No Iranian oilfield, refinery or the Kharg terminal has been confirmed hit — strikes have stayed on military and maritime targets, which is why Brent sits around $85 ($84.95 settle, 15 Jul) rather than back above $100. Separately, Reuters reports roughly 40% of Russian refining capacity is now offline (repairs and outages, not destroyed) after Ukraine’s sustained drone campaign — the clearest verified physical loss in the system right now.