Hormuz vs Bab el-Mandeb: 2026 Energy Security Benchmark

A tanker can still physically cross the Strait of Hormuz and yet be unable to secure insurance at a price its charterer will accept. That is the practical difference between an open waterway and an available trade route.

Hormuz and Bab el-Mandeb are often grouped together as maritime chokepoints, but they fail in different ways. Hormuz creates the sharper immediate energy shock because pipeline bypasses cover only a fraction of normal oil flows and LNG has few substitutes. Bab el-Mandeb and the Suez route create the larger rerouting penalty, adding distance, fuel, insurance costs, and delivery uncertainty.

Key Takeaways

• Hormuz is harder to replace: An estimated 20.9 million barrels per day (b/d) of petroleum liquids and 11.4 billion cubic feet per day (Bcf/d) of LNG crossed the strait in the first half of 2025. Main pipeline alternatives covered only about 22.5% of the petroleum-liquids flow on a nominal-capacity basis.
• Bab el-Mandeb is costlier to avoid: Ships can sail around the Cape of Good Hope, but the detour ties up vessels for longer, raises fuel and insurance costs, and disrupts delivery schedules.
• Practical rule: Treat bypass capacity below 25% of normal flow as mitigation, not replacement. Watch vessel behavior and usable capacity, not closure announcements alone.

Hormuz and Bab el-Mandeb: Two Different Disruptions

The key distinction is between supply-shock severity and rerouting friction.

Hormuz sits beside the world’s densest concentration of oil and gas exports. Saudi Arabia, Iraq, Kuwait, Qatar, the United Arab Emirates, and Iran all depend on Gulf maritime access to varying degrees. A serious interruption threatens crude oil, refined products, condensate, and LNG at the same time.

Bab el-Mandeb links the Red Sea with the Gulf of Aden and the Indian Ocean. Its importance extends through the Suez Canal to European and Mediterranean markets. When security risks rise, ships can usually continue moving around Africa. The alternative is expensive and slow rather than physically impossible.

These figures describe different periods and cargo categories, so they should not be blended into one trend line. The 20.9 million b/d and 4.2 million b/d figures are first-half 2025 estimates for petroleum liquids, not crude oil alone. A separate estimate puts Hormuz petroleum-liquids traffic at 21.6 million b/d in the fourth quarter of 2025. Another reports 4.9 million b/d through Bab el-Mandeb in the second quarter of 2026. The later figures are included as reference points, not as direct substitutes for the first-half 2025 comparison.

If Hormuz traffic falls from 21.6 million b/d in Q4 2025 to 4.9 million b/d in Q2 2026, the decline is about 77.3%. That would not, by itself, prove a formal legal closure. It would show that a corridor can remain technically navigable while becoming commercially unattractive or operationally unsafe.

For shipowners, this distinction matters immediately. Physical access is only one part of route availability. War-risk premiums, crew-safety concerns, naval restrictions, charterparty clauses, port delays, and cargo cancellations can all reduce effective capacity.

How Much Gulf Oil Can Bypass Hormuz?

Only a limited share.

Saudi Arabia and the United Arab Emirates have combined alternative pipeline capacity estimated at about 4.7 million b/d. Against the 20.9 million b/d first-half 2025 benchmark for Hormuz petroleum liquids, that equals roughly 22.5%.

Bypass Coverage: 4.7 million b/d ÷ 20.9 million b/d × 100 = approximately 22.5%

The 4.7 million b/d figure should be treated as combined nominal or nameplate capacity, not a promise of current, fully usable throughput. Maintenance, pumping constraints, terminal availability, crude compatibility, storage limits, and security conditions can reduce effective capacity. In a crisis, actual deliveries may fall below the headline number.

Even at full nominal operation, the implied shortfall is about 16.2 million b/d before accounting for stock releases, demand reduction, alternative suppliers, refinery changes, or emergency production adjustments.

That is the practical answer to how much oil can bypass Hormuz: roughly 4.7 million b/d through the principal Saudi and Emirati pipeline systems under the stated benchmark. The pipelines reduce exposure; they do not replace the strait.

Oil also has more flexibility than LNG. A crude cargo can sometimes be redirected, exchanged for another grade, or replaced with inventories. LNG is less forgiving. It depends on liquefaction capacity, available vessels, regasification slots, destination flexibility, and seasonal demand. Qatar’s export geography makes Hormuz especially important to global gas markets.

Malacca is a useful contrast: about 23.2 million b/d of petroleum liquids moved through the strait in the first half of 2025, more than the cited Hormuz volume. Its main risks are congestion, traffic density, limited deep-water alternatives, and exposure for China, Japan, South Korea, and Southeast Asia—not the same direct conflict environment surrounding Hormuz.

The better question is not which strait carries more oil. It is which route carries the largest volume that cannot be replaced quickly, at comparable cost and with comparable cargo flexibility. On that test, Hormuz remains the more dangerous source of an immediate energy shock.

Why Bab el-Mandeb Creates the Larger Rerouting Penalty

The Red Sea route has a different failure mode. About 4.2 million b/d of petroleum liquids moved through Bab el-Mandeb in the first half of 2025, down from approximately 9.3 million b/d in 2023. The decline was about 54.8%.

The Cape of Good Hope is a genuine alternative. EIA recorded approximately 9.1 million b/d of petroleum liquids moving around the Cape in the first half of 2025. But the Cape is a substitute route, not a substitute logistics system.

A vessel diverted from Suez may face:

• Additional sailing days and fuel consumption
• Higher charter rates as ships remain occupied longer
• Increased emissions and routing costs
• Missed port windows and disrupted liner schedules
• Higher inventory and working-capital requirements
• Greater exposure to weather, congestion, and insurance changes

The exact distance depends on the origin, destination, vessel type, and planned Suez route. A Gulf-to-Europe voyage can add several thousand nautical miles around southern Africa. Asia-to-Europe container services can see delays measured in days or weeks rather than hours.

That is why Red Sea disruption often appears first as a freight and inflation problem, not an immediate physical shortage. The cargo still exists. It simply takes longer to arrive, costs more to move, and requires more vessels to maintain the same delivery frequency.

Rerouting Penalty = extra distance + extra sailing time + extra fuel + extra insurance + extra inventory requirement

The commercial result varies by cargo. A shipper may accept the Cape route for a high-value consignment but reject it for low-margin bulk goods. An LNG buyer may find a replacement cargo but still need a compatible vessel, a regasification slot, and a price that works.

Using AIS to Spot Route Disruption

Official statements often lag behind operating conditions. AIS and satellite data can show a corridor deteriorating before authorities announce a closure.

Start with a 30-day baseline for each route: daily vessel counts, cargo mix, average speed, course changes, anchorage time, AIS completeness, port calls, destination patterns, and normal route dispersion. Then look for sustained deviations, such as vessels clustering outside a strait, repeated loitering, sudden speed reductions, destination changes, or a broad shift to longer routes.

AIS gaps need careful interpretation. They may result from equipment failure, limited coverage, deliberate disabling, or spoofing. A missing transmission is not proof of an attack or illicit activity.

Synthetic-aperture radar can detect vessels at night and through cloud cover. Optical imagery can confirm port queues, tanker concentrations, terminal operations, and offshore activity. Trade records and official maritime notices provide useful context.

The strongest assessment combines:

• AIS: what vessels report
• SAR: what satellites detect
• Optical imagery: what ports and terminals show
• Trade data: what cargo was recorded as moving
• Official notices: what governments and maritime agencies report

Legal classification also matters. Under IMO and UNCLOS frameworks, piracy generally refers to attacks outside territorial waters, while armed robbery against ships generally concerns incidents in territorial waters. Missile strikes, drone attacks, mines, state action, and military coercion fall into different categories. A serious dataset should record the maritime zone, weapon, vessel type, outcome, and classification—not just count “attacks.”

Three Decision Rules for 2026

1. Test physical substitutability

If an alternative covers less than 25% of normal flow, classify it as mitigation rather than replacement. Hormuz fits that test: approximately 4.7 million b/d of nominal pipeline capacity against 20.9 million b/d of first-half 2025 petroleum-liquids flow.

2. Test commercial viability

Check for available vessels, terminal capacity, compatible crude or gas specifications, affordable insurance, acceptable delivery times, and sufficient storage cover. A route can pass the geography test and fail the economics test.

3. Test functional disruption

Treat a corridor as functionally disrupted when at least two conditions persist:

• Physical attacks or credible threats
• Sustained vessel avoidance or speed reduction
• War-risk insurance or chartering restrictions
• Port or terminal congestion
• AIS-confirmed diversion at scale
• Cargo cancellations or destination changes

This avoids overreacting to one incident while still catching deterioration before a formal closure.

For the Hormuz-versus-Bab-el-Mandeb comparison, the operating answer is straightforward: treat Hormuz as the higher immediate supply-shock risk, and Bab el-Mandeb and Suez as the higher voyage-delay and logistics-cost risk. Malacca belongs on the highest-volume watchlist, while Black Sea routes need separate treatment because military risk, territorial disputes, and export dependence overlap.

Frequently Asked Questions

Which is more vulnerable in 2026, Hormuz or Bab el-Mandeb?

Hormuz poses the greater immediate energy-supply risk. About 20.9 million b/d of petroleum liquids and 11.4 Bcf/d of LNG crossed it in the first half of 2025. Bab el-Mandeb is easier to bypass physically, but the Cape route imposes a larger time and cost penalty.

How many extra miles does Cape rerouting add?

The answer depends on the origin and destination, but routes between the Indian Ocean and Europe can add several thousand nautical miles around southern Africa. The effects include longer voyages, higher fuel use, greater vessel demand, and missed delivery windows.

Which chokepoint has the fewest alternatives?

Hormuz has the fewest practical alternatives for replacing its full energy flow. Saudi and Emirati pipelines provide about 4.7 million b/d of nominal capacity—roughly 22.5% of the 20.9 million b/d first-half 2025 petroleum-liquids benchmark—and LNG has even fewer near-term substitutes.

How can AIS detect maritime rerouting?

Analysts compare vessel positions, speed, course, destination, AIS gaps, and anchorage behavior with a 30-day baseline. The results should be checked against radar, optical imagery, port activity, trade data, and official notices before a route deviation is treated as confirmed disruption.