The Yanbu route to the Red Sea - avoiding the Strait of Hormuz

Wednesday 18 March 2026

The effective closure of the Strait of Hormuz – whether by deliberate interdiction, military escalation or the cumulative effects of insecurity – represents the most severe conceivable disruption to the global hydrocarbons trade. In such circumstances attention inevitably turns to the alternative export architecture of the Gulf states, foremost amongst them Saudi Arabia’s east–west crude system terminating at Yanbu on the Red Sea. Yet while the Yanbu route is often invoked as a strategic safety valve, its practical capacity to replace Hormuz is sharply constrained, both technically and geopolitically.

The strategic logic of Yanbu

The east–west pipeline, often referred to as Petroline, was conceived during the Iran–Iraq War precisely to mitigate the vulnerability of Gulf exports to maritime disruption. It stretches approximately 1,200 kilometres from Abqaiq in Saudi Arabia’s Eastern Province to the Red Sea port of Yanbu, thereby bypassing the narrow and militarily exposed waters of the Gulf. 

In peacetime this infrastructure is a redundancy; in wartime it becomes a lifeline. The present crisis has demonstrated this with unusual clarity. With Hormuz effectively closed, Saudi Arabia has redirected a substantial portion of her exports westwards. Contemporary reporting indicates that up to five million barrels per day have been rerouted via this system, allowing the Kingdom to maintain a significant, although diminished, presence in global markets. 

At maximum configuration, the pipeline system is capable of transporting approximately 7 million barrels per day, assuming that associated natural gas liquids lines are converted to crude service. This is an impressive figure in absolute terms, and it places Saudi Arabia in a uniquely advantaged position amongst Gulf producers, many of whom lack any meaningful bypass infrastructure.

The scale mismatch

However the fundamental limitation of the Yanbu route lies in its scale relative to the volumes ordinarily transiting Hormuz. The Strait typically carries in the order of 16–20 million barrels per day of crude oil, representing roughly one-fifth of global consumption. 

Even if the Saudi east–west system operates at its theoretical maximum of 7 million barrels per day, it can only substitute for a fraction of that flow. When combined with other regional bypass pipelines – notably the UAE’s Habshan–Fujairah line, with a capacity of roughly 1.5–1.8 million barrels per day – the total diversion capacity still falls far short of Hormuz throughput. 

In practice analysts estimate that realistic spare bypass capacity across the region is in the range of 2–3 million barrels per day, a figure that underscores how little slack exists in the system once pipelines are fully utilised. In other words the Yanbu route is not an alternative to Hormuz so much as a partial mitigation of its loss.

This structural mismatch explains the dramatic contraction in Gulf exports observed during the current crisis. Oil flows from the region have reportedly fallen by more than 60 per cent, despite the activation of all available alternative routes. 

Operational constraints at Yanbu

Even within its nominal capacity, the Yanbu route faces a series of operational constraints.

First, there is the issue of internal allocation. Not all pipeline throughput is available for export. A portion of the crude delivered to Yanbu is consumed domestically, feeding refineries and petrochemical complexes along the Red Sea coast. Estimates suggest that as much as 2 million barrels per day may be absorbed in this way, reducing the volume available for international shipment. 

Secondly, port infrastructure imposes its own limits. Yanbu possesses substantial loading facilities, including multiple export terminals, yet these are not infinitely scalable. Tanker berths, storage tanks and blending facilities create bottlenecks that constrain the rate at which crude can be loaded and dispatched, particularly under conditions of surge demand. 

Thirdly, the pipeline itself is not immune to disruption. It has previously been targeted by drone and missile attacks, most notably in 2019, demonstrating its vulnerability to the same asymmetric warfare that threatens maritime routes. In a scenario of sustained regional conflict, the east–west corridor becomes an obvious strategic target.

Finally, there are logistical and commercial frictions. Contracts, shipping schedules and refinery configurations are optimised for established supply routes. Redirecting crude via Yanbu requires adjustments in tanker deployment, insurance arrangements and crude blending, all of which introduce inefficiencies and delays.

The broader system: partial relief, not replacement

The Yanbu route must also be understood as part of a wider, but still inadequate, network of alternatives. Saudi Arabia can connect westbound flows to the SUMED pipeline through Egypt, extending reach into the Mediterranean basin. The UAE can export via Fujairah, bypassing the Strait altogether. Yet these systems are complementary rather than substitutive.

Critically there is no meaningful alternative for liquefied natural gas. Qatar’s exports remain almost entirely dependent upon maritime transit through Hormuz, rendering the gas market even more exposed than oil. 

Moreover pipeline routes cannot easily accommodate the full diversity of crude grades produced in the Gulf. Differences in sulphur content and density complicate blending and transportation, further constraining effective throughput.

Geopolitical implications

The partial functionality of the Yanbu route carries significant geopolitical consequences.

For Saudi Arabia it reinforces her position as the only Gulf producer with a credible, if limited, overland export alternative. This enhances her strategic leverage, both within OPEC and in her relations with consuming nations. She can continue to supply key customers, albeit at reduced volumes, while others are forced into near-total shutdown.

For global markets, however, the insufficiency of the Yanbu route ensures persistent scarcity. Even with maximum utilisation, the loss of Hormuz throughput translates into millions of barrels per day removed from the market. The result is price volatility, inventory drawdowns and the activation of strategic petroleum reserves.

For the wider Gulf the lesson is stark. Decades of reliance on a single maritime chokepoint have created a structural vulnerability that cannot be remedied quickly. Pipeline infrastructure, while valuable, is inherently limited in scale and flexibility.

Yanbu is not a solution

The Yanbu route is best understood not as a substitute for the Strait of Hormuz but as a strategic hedge against its disruption. It allows Saudi Arabia to maintain a reduced but still meaningful export capability, cushioning the immediate shock of a blockade. Yet its capacity, even when fully mobilised, is insufficient to offset the loss of Hormuz, and its operation is subject to technical, logistical and security constraints.

In the present crisis Yanbu has demonstrated both its indispensability and its limitations. It is the artery through which a diminished flow of Gulf hydrocarbons continues to reach global markets. But it is a narrow artery, and one that cannot sustain the full weight of the world’s energy demand.