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The red-hulled oil products tanker Affinity transiting the Suez Canal, the northern end of the Red Sea route

I Geo-Economics & Chokepoints·Analysis·Middle East and North Africa

As Hormuz heats up, oil's real risk shifts to the Red Sea

Three ships were hit in the Strait of Hormuz on 29 September, yet transits rose to 17. Saudi crude has moved back from the Red Sea to the strait, and Bab el-Mandeb flows have more than halved. Somali pirates have also killed crew for the first time in over a decade.

Energy & Shipping Desk · 1 October 2026 · 7 min read · 10 sources

Oil products tanker Affinity transiting the Suez Canal, December 2011 — archive photo, illustrativePhoto: Panoramio kullanıcısı 2433337 / Wikimedia Commons · CC BY-SA 3.0 · resized · Source

Why it matters

Because one of the Gulf's two oil outlets has weakened, the load is gathering in Hormuz again. Saudi Arabia shipped 2.58 million barrels a day through Hormuz in September, while Bab el-Mandeb flows fell from 5.45 million to 2.56 million barrels. The East-West pipeline is carrying 2.0–2.65 million barrels a day against a capacity of 7 million. Piracy in the Gulf of Aden has turned deadly. On 30 September Brent's November contract closed 5.47 $ above December. The curve prices today's shortage, but not yet the system's loss of its backup outlet.

Implications

  • According to Kpler, Saudi Arabia's September shipments through Hormuz averaged 2.58 million barrels a day; Bab el-Mandeb flows fell from 5.45 million to 2.56 million barrels a day.
  • UKMTO reported that 3 ships were hit in Hormuz on 29 September; Windward counted 17 transits the same day, up from 16 the day before.
  • On 30 September Brent's November contract closed at 103.50 $ and the December contract at 98.03 $; the front-month premium was 5.47 $.
Map: As Hormuz heats up, oil's real risk shifts to the Red Sea

More attacks, and more transits

On 29 September UK Maritime Trade Operations (UKMTO, the British service that issues security alerts to merchant shipping) reported that 3 ships had been hit around the Strait of Hormuz. According to Maritime Executive, they included the 299,319 dwt VLCC Mersin Prosperity and the 115,949 dwt Sinbad. The third was reported to be an LNG carrier, but its name could not be verified.

Windward data showed 17 transits that same day, compared with 16 the day before. Tracking data cited by Baird Maritime had counted only 9 transits on 24 September. So even as attacks continued, visible traffic through the strait roughly doubled within a week.

According to an Al Jazeera analysis on 30 September, the region's exports in September reached 16.328 million barrels a day, the highest since the war began on 28 February. The pre-war baseline was 19.513 million barrels a day, leaving a shortfall of about 3.2 million barrels.

The picture can be read two ways. According to Al Jazeera, the Iranian side says fighting in the strait continues and that it keeps striking small vessels transiting without permission. Windward, however, judges that Iran is less able to restrict traffic in the southern corridor than in midsummer. Under a US blockade, Tehran's own shipments fell to 100,000 barrels a day in September, down from 2.5 million in February.

Why Saudi crude returned to the strait

Kpler data cited by The National show Saudi Arabia's September shipments through Hormuz rising to 2.58 million barrels a day. That is 43% of the oil traffic through the strait. The kingdom has turned back to the strait from the western outlet it built to bypass Hormuz.

The reason is damage on the Red Sea side. A drone attack on 10 September halted the East-West pipeline, and loadings at Yanbu stopped on 11 September. Anadolu Ajansı reported on 30 September that half of the line's export capacity had returned. According to BigGo Finance, the pipeline is carrying 2.0–2.65 million barrels a day against a capacity of 7 million.

At Bab el-Mandeb, the strait linking the Red Sea to the Gulf of Aden, oil flows fell over the same period from 5.45 million to 2.56 million barrels a day. Our previous report looked at the insurance premium at Yanbu. What is visible this time is different: cargoes are avoiding the risk of the route itself, not just its premium.

The backup outlet has weakened

According to Kpler, about 40% of crude now leaves the region without passing through Hormuz, compared with 17% before the war. That seems to suggest dependence on the strait has fallen. But the largest bypass route, the Saudi pipeline to the Red Sea, is running at less than half its capacity.

This is why two measures tell different stories. Kpler puts combined flows through Hormuz, Bab el-Mandeb and Suez at 9.99 million barrels a day in September, 61% below February levels. Al Jazeera, by contrast, puts regional exports including pipelines at about 80% of pre-war levels. The figures cover different routes and cannot be compared directly.

The upshot is that Gulf oil had two outlets, and one of them has weakened. Every new attack in Hormuz now hits a system with less spare capacity.

Piracy returns to the Gulf of Aden

The risk also extends south of Bab el-Mandeb. According to a 30 September Al Jazeera report, Somali pirates killed 5 crew members on the Palau-flagged tanker Honour 25, which they had hijacked on 21 April, before it was rescued. This is seen as the first deadly attack by Somali pirates in more than a decade.

According to AP, the ship had 17 crew on board, and at least 11 pirates escaped. Officials count at least 15 attacks since April; the MT Asana, hijacked in July, is still being held off Galmudug. The 2008–2014 wave cost the global economy billions of dollars.

New investment is also going ahead on the same coast. On 30 September Kenya and Dangote broke ground at Lamu on a refinery that will process 700,000 barrels a day; Dangote promised it would open within 40 months. Crude supplies for the plant will also pass through this increasingly tense stretch of the Indian Ocean.

What the curve prices, and what it misses

According to the Reuters summary on Euronext, Brent's November contract closed at 103.50 $ on its expiry day, 30 September, while the December contract closed at 98.03 $. The 5.47 $ gap, known as backwardation (when near-term delivery costs more than later delivery), shows that physical supply is tight today. Brent ended September up about 14%.

EIA data released on 30 September point the same way: crude inventories rose by 922,000 barrels while distillate stocks fell by 2.3 million barrels. The shortage is being felt more in refined products than in crude.

The curve's downward slope shows the market assumes the squeeze will ease within months. That assumption rests on rising traffic through Hormuz. Yet traffic is rising precisely because the Red Sea outlet has weakened, so the risk is not falling but concentrating in a single strait.

From 1 October headline Brent will look about 5 $ lower because it has rolled to the December contract. The drop reflects a change of contract month, not easing.

What it means for Türkiye

For Türkiye, which buys at Brent-linked prices, the fact that both outlets are risky at once could keep the near-term delivery premium in place for longer. The Red Sea and Suez route is the shortest path to the Mediterranean, so the squeeze at Bab el-Mandeb directly affects cargoes bound for this region.

The 2.3 million barrel drop in distillate stocks shows diesel is the first product to watch. The mechanical 5 dollar fall in the headline price, meanwhile, does not by itself mean a cheaper import bill.

There are three indicators to watch. The first is whether daily transits at Bab el-Mandeb rise above the 26 ships of 24 September. The second is whether the East-West pipeline exceeds 2.65 million barrels a day. The third is how the December contract trades around 98.03 $.

Probabilities

Scenarios

ScenarioProbabilityTriggerMarket impact
H1The load stays piled on one strait55%The East-West pipeline stays in the 2.0–2.65 million barrel a day range, Bab el-Mandeb flows hover around 2.56 million barrels, and attacks in Hormuz remain sporadic but persistent.Gulf exports keep rising, but most of the load passes through Hormuz; a single incident could affect much of the system.
H2The Red Sea outlet reopens25%The East-West pipeline nears full capacity, Yanbu loadings continue without attack, and daily transits at Bab el-Mandeb rise clearly above 26 ships.Gulf oil uses both outlets again, the pile-up in Hormuz eases and single-incident risk is spread out.
H3Both fronts choke at once20%Intensifying attacks in Hormuz push transits below 9 ships, while at the same time a new hijacking occurs in the Gulf of Aden or a new attack in the Red Sea.Both Gulf oil outlets narrow simultaneously; the 3.2 million barrel shortfall against pre-war levels widens.

Module A

Constraints Matrix

STRUCTURAL AVG 3.8 · TACTICAL AVG 2.5Structural constraints dominate: the outcome is set more by these limits than by the actors' preferences.

Hard structural constraintspersistent · beyond the actors' will

  • East-West pipeline at half capacity · Saudi Arabia

    4/5

    The line carries 2.0–2.65 million barrels a day against a capacity of 7 million; repairs after the 10 September drone attack have restored only half its capacity.

  • Bab el-Mandeb squeeze

    4/5

    According to Kpler, oil flows through Bab el-Mandeb fell from 5.45 million to 2.56 million barrels a day; the Red Sea outlet has largely lost its role as a backup route.

  • Continuing attacks in Hormuz · Iran

    4/5

    UKMTO reported 3 ships hit on 29 September; no perpetrator was named. The Iranian side says it keeps striking small vessels transiting without permission.

  • Iranian exports under blockade · United States

    3/5

    Under a US blockade Iran's September shipments fell to 100,000 barrels a day from 2.5 million in February; Tehran now has far less export revenue to lose if the strait closes.

Tactical frictiontemporary · eases over time

  • Deadly piracy weeks

    3/5

    Five crew were killed on Honour 25 and at least 11 pirates escaped; at least 15 attacks have been reported since April, and the MT Asana is still being held.

  • Shrinking distillate stocks weeks

    3/5

    In EIA data for 30 September, distillate stocks fell by 2.3 million barrels to 105.2 million, and petrol stocks by 1.7 million barrels to 204.4 million.

  • Contract roll days

    2/5

    On 1 October headline Brent rolled to the December contract, which closed at 98.03 $ rather than 103.50 $; the drop of about 5 $ is mechanical.

  • Conflicting flow measures weeks

    2/5

    Kpler puts combined flows through three straits 61% below February, while Al Jazeera puts exports including pipelines at about 80% of pre-war levels; the measures cover different routes.

Module B

Signal vs Noise

SIGNAL 63% · NOISE 37%

Module C

Asset-Class and Positioning Implications

Asset classExposureTransmission channelH1H2H3ExpectedConvictionHorizonWhat to watch
CommoditiesFront end of the crude oil futures curveAs the load piles into one strait, the near-term scarcity premium holds or steepens+−−+++0.45●●●0–3 monthsThe 95 and 103.50 dollar levels on the December contract
CommoditiesMiddle distillate marginsFalling distillate stocks and a narrower Red Sea–Suez product route squeeze diesel more than crude+−+++0.70●●●0–3 monthsWeekly EIA distillate stocks and the 105.2 million barrel level
Freight & insuranceWar-risk and piracy premiums in the Gulf of Aden and Bab el-MandebDeadly piracy and Houthi attacks raise the cost of the Red Sea route independently of Hormuz+−+++0.70●●●3–12 monthsThe 26-ship threshold for daily Bab el-Mandeb transits and new hijackings off Somalia
Freight & insuranceVLCC freight out of the GulfSaudi crude returning to Hormuz concentrates tanker demand on one route, and attack risk adds to freight+0+++0.95●●●0–3 monthsThe 9 and 17 ship levels for daily Hormuz transits
FXCurrencies of energy-importing emerging marketsImport bills follow near-term delivery prices; a mechanical drop in the headline price does not reach the bill−+−−−0.70●●●0–3 monthsThe December contract and importing countries' monthly energy bills
CreditSovereign and quasi-sovereign credit premiums of Gulf producersWhile revenue growth depends on a single strait, attack risk feeds into credit premiums0−+−0.05●●●3–12 monthsThe Saudi CDS series and daily volumes on the East-West pipeline

How to read: ++ strong structural support · + support · 0 neutral · − pressure · −− strong pressure. “Expected” is the direction weighted by scenario probabilities. H1: The load stays piled on one strait · H2: The Red Sea outlet reopens · H3: Both fronts choke at once.

General, scenario-conditional analysis at asset-class level. It contains no specific security, price target or trade timing and is not personalised investment advice (Turkish Capital Markets Law No. 6362).

Second-order effects

And then what?

Starting point

Damage to the East-West pipeline and at Yanbu sent Saudi crude back to Hormuz; Bab el-Mandeb flows fell from 5.45 million to 2.56 million barrels a day, while in Hormuz 17 transits went ahead on 29 September even as 3 ships were hit.

  1. 1

    Freight and insurancewithin days

    With the Gulf's backup outlet weakened, every attack in Hormuz threatens a larger volume. Saudi crude returning to the strait, with a 43% share, raises single-incident risk, and tanker owners add that risk to freight.

    Watch: Whether daily Hormuz transits fall below 9 ships, and UKMTO alerts

  2. 2

    Product supplywithin weeks

    With the Red Sea–Suez route narrowed and piracy in the Gulf of Aden turning deadly, product cargoes bound for the Mediterranean become more expensive. Because distillate stocks have fallen by 2.3 million barrels, the shortage hits diesel before crude.

    Watch: Weekly EIA distillate stock data and the 26-ship threshold for daily Bab el-Mandeb transits

  3. 3

    Import billwithin months

    In Türkiye, which buys at Brent-linked prices, the import bill tracks near-term delivery prices. Despite the mechanical 5 $ drop in the headline price, diesel and freight costs keep the bill high, and the energy component of the current account deficit shrinks more slowly than expected.

    Watch: Türkiye's October and November energy import data and the unit price of diesel imports

What breaks the chain

If the East-West pipeline approaches its 7 million barrel capacity and daily transits at Bab el-Mandeb rise clearly above 26 ships, the load spreads across both outlets again and the chain breaks at the first step.

Triggers

Thresholds to watch

IndicatorThresholdTodayWhat it means
Bab el-Mandeb transits> 26 ships27Daily transits at Bab el-Mandeb rising clearly above the 24 September level would show the Red Sea outlet regaining its role as a backup route.
Strait of Hormuz transits< 9 ships1Hormuz transits falling below the 9 ships of 24 September would show that attacks are choking the single outlet carrying the load, and that spare capacity is insufficient.
Brent crude oil (futures)> 103.50 $103.50The December contract rising above the November contract's expiry close would show the market no longer sees the shortage as temporary and is pushing the risk further along the curve.
Brent crude oil (futures)< 95 $103.50The December contract falling below 95 $ would show the market leaning towards the view that rising Hormuz traffic is enough to unwind the risk premium.

Sources

  1. The National — Oil flows through Strait of Hormuz rise on Saudi pivot as Red Sea traffic plunges
  2. Maritime Executive — Three Vessels Struck in Strait of Hormuz as Iran's Grip Loosens
  3. Al Jazeera — Economic war: Is Iran losing its leverage over the Strait of Hormuz?
  4. Anadolu Ajansı — Oil prices fall on higher Hormuz flows, US reserve release plans
  5. Al Jazeera — Somali pirates killed five crew members on hijacked tanker, officials say
  6. ABC News (AP) — Police in Somalia say pirates killed 5 crew members of a hijacked tanker
  7. Euronext (Reuters) — Bonds post worst month in years, stocks decline in September and oil gains
  8. BigGo Finance — Brent posts 14% monthly surge as Iran talks stall
  9. Capital FM — President Ruto, Dangote break ground on Sh2.2tn Lamu Oil Refinery
  10. Baird Maritime — Strait of Hormuz tracked vessel movements slide to nine

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