Oil steadies as Hormuz transit passage rights face test

‘Non-hostile’ limits at Hormuz conflict with transit passage rights

Iran says it will allow non-hostile vessels to pass through the strait of Hormuz, while restricting others. Framing transits by perceived hostility raises immediate legal questions.

Under the UN Convention on the Law of the Sea, transit passage rights through international straits are continuous and cannot be unilaterally suspended; according to the American Society of International Law, nationality-based limits are inconsistent with that regime. Iran’s “non-hostile” filter remains undefined in treaty law and invites disputes over scope and enforcement.

Why this matters: freedom of navigation, shipping risk, energy flows

Freedom of navigation underpins predictable shipping and energy flows via the Strait of Hormuz. Uncertainty over selective passage elevates counterparty, schedule, and compliance risk for carriers and charterers.

as reported by Le Monde, Risk Intelligence’s Louis Borer points to asymmetric A2/AD tactics, drones, missiles, and small craft, that compress safety margins in such a narrow chokepoint. Even nominally “non-hostile” voyages face higher operational thresholds.

A report by ING analysts frames Tehran’s selective reopening as strategic, likely designed to lift energy prices. That implies only limited permissive transits and continued volatility around routing decisions.

Insurance premia have spiked, and operators are pausing or adjusting schedules. According to Radio Free Europe/Radio Liberty, costs have risen enough that many vessels are avoiding the Strait altogether.

The report adds that perceived risk, not solely confirmed incidents, is disrupting liftings and fixtures. Selective passage also increases due-diligence burdens on counterparties tied to U.S. or Israeli interests.

Practical steps and international responses

Shipowners are recalibrating operations as guidance evolves and governments debate responses. The near-term baseline is conservative routing, tighter vetting, and dynamic risk assessment.

Operator considerations: insurance surges; avoid high-risk areas per IMO guidance

According to the International Maritime Organization, operators should avoid waters where attacks are occurring and maintain heightened vigilance until conditions improve. Underwriters may adjust additional war risk premiums rapidly; voyage plans should reflect published high-risk areas and company security policies.

Diplomatic responses: EU demands reopening; allies explore Hormuz coalition

European capitals are applying political pressure while weighing options short of combat operations. The European Council “demanded the reopening of the Strait of Hormuz” in a joint session on March 19, 2026. Separately, Axios reported that several U.S. allies back exploring a Hormuz coalition to restore commercial traffic, though modalities remain under discussion.

FAQ about Strait of Hormuz

How is ‘non-hostile’ being defined in practice and which ships are most likely to be denied passage?

Practically, “non-hostile” excludes ships linked to U.S., Israel, or allied interests; vessels tied to friendlier nations appear more likely to pass on a case-by-case basis.

What are the current security risks and insurance costs for tankers transiting the Strait of Hormuz?

Risks involve drones, missiles, and small boats in a narrow chokepoint; insurance premiums have surged, leading many tankers to delay or avoid transits pending clarity.