Why the Houthis Don't Need to Close Bab el-Mandeb to Control Global Shipping

The Houthi Advance Toward Bab el-Mandeb

On 10 September, Houthi forces captured the Yemeni city of Mocha, extending their territorial reach closer to the Bab el-Mandeb strait. Reports that they had also reached Mayyun island inside the strait remain unconfirmed. The distinction matters: a full closure would be a clear crisis, while the current situation is a slow shift in the commercial terms of passage.

Shipping, energy and manufacturing companies now face two decisions—how quickly to reroute, resupply and restock if a temporary disruption becomes structural, and what to demand from governments whose military and political strategies remain unclear. The strait does not need to be formally closed for the costs of closure to be imposed.

Maersk suspended Suez and Bab el-Mandeb transits in March as the regional conflict escalated. By September, Maersk and Hapag-Lloyd had restored selected Suez services, describing the return as "measured" rather than a full network recovery. Reuters reported in July that Red Sea war-risk premiums had risen to about 0.75% of insured hull value. A route can remain open on the map and still become increasingly difficult to insure and schedule.

What Selective Chokepoint Pressure Means for Shipping and Energy

Why “Open” Is the Wrong Category for Bab el-Mandeb

A group capable of selectively threatening certain vessels can make insurance more expensive or less available and push carriers back toward the Cape of Good Hope. The waterway remains open in name, but commercial usability is already deteriorating. Maersk's "measured" return to selected Suez services shows that the corridor now operates between degrees of openness, not as a simple open-closed switch.

The Insurance Channel: 0.75% War-Risk Premiums

War-risk premiums reported at roughly 0.75% of insured hull value can alter route economics well before any navy declares passage impossible. Premiums price selective risk, not only a formal blockade. If attacks continue or targeting becomes less predictable, those premiums can move again quickly—changing carrier decisions without any official closure of the strait.

Hormuz and Bab el-Mandeb Are Linked, Not Additive

The U.S. Energy Information Administration estimates 20.9 million barrels per day passed through Hormuz in the first half of 2025, compared with about 4.2 million barrels per day through Bab el-Mandeb. Those volumes should not simply be added. The real link is in alternatives: Saudi Arabia can move some crude west through the East-West pipeline, but Europe-bound cargoes still need a reliable Red Sea and Suez route—or a long detour around Africa. For LNG, the constraint is even tighter because Qatar's export facilities sit inside the Hormuz zone, and a Cape reroute cannot move a liquefaction plant or export berth.

China’s Suez and Arctic Alternatives Have Limits

Beijing and Cairo agreed in September to begin the third phase of the TEDA China-Egypt industrial zone in the Suez Canal Economic Zone, and Russia's Rosatom announced seven Chinese ships would make eight Arctic voyages to Europe via the Northern Sea Route. These moves can shorten selected container and industrial supply chains. They cannot, however, move Gulf hydrocarbons that must first exit Hormuz.

The Houthi Motivation Question Won't Resolve the Boardroom Timeline

The Houthis may be using the Red Sea to negotiate with Saudi Arabia, consolidate control against rivals in Yemen, support a broader Iranian strategy or escalate for ideological reasons. Each explanation produces the same immediate shipping risk but a different trajectory for the next year. Selective targets, restraint and de-escalation would support the negotiation reading; indiscriminate attacks and rejection of workable concessions would point toward wider confrontation.

Corporate Playbook for a Partially Closed Strait

• Within the first 30 days, map every contract and cargo exposed to Bab el-Mandeb and Hormuz, secure reversible routing and insurance options, and identify inventory that cannot withstand another service disruption—before premiums rise further from the reported 0.75% of insured hull value.
• If selective attacks, territorial control or insurance restrictions persist for 90 days, shift toward longer-duration freight capacity, revised force majeure terms and qualified alternative suppliers, especially for crude and LNG cargoes that cannot relocate their source.
• If the risk regime lasts a year, treat buffer capacity as a capital-expenditure decision covering production location, refinery feedstocks and distribution networks, because each month of uncertainty turns an emergency bypass into contracted cost.
• Demand that governments publish naval-protection and incident-response terms, real-time tracking information and conflict-avoidance mechanisms, while clarifying whether critical cargoes will receive insurance support and defining milestones that could support Saudi-Houthi or UN-led talks.
• Put the same questions to Beijing, whose energy imports transit Hormuz and whose TEDA China-Egypt industrial investments deepen Chinese exposure to Suez predictability.