Strait of Hormuz: Shipping Under a New Rulebook

Iran-approved transit corridors are reshaping global crude flows. Insurance premiums are already telling the story. The Strait of Hormuz, the world's most critical maritime chokepoint for oil, is operating under a de facto new rulebook. The traditional concept of freedom of navigation is being challenged by regional actors asserting control over transit routes, forcing shipping companies to navigate a complex web of geopolitical risks that have no modern precedent.

The Insurance Market as a Leading Indicator

The insurance market is often the most honest real-time assessor of geopolitical risk, and the signals from the Strait of Hormuz are unambiguous. Major maritime insurers have suspended or repriced war-risk coverage for ships traveling through the Strait. Ships wanting to pass through are finding it almost impossible to buy hull war cover after hostilities intensified in early 2026. Shipowners are placing substantial volume requests for insurance cover as they look to transit the Strait following ceasefire negotiations, reflecting the extraordinary demand for risk transfer in the region.

The scope of coverage that has become unavailable or prohibitively expensive includes War Hull Risk insurance covering physical damage from war perils such as missile, drone, and mine strike; War Protection and Indemnity coverage; and Loss of Hire coverage. This is not a temporary disruption; it is a structural repricing of a risk that was previously considered manageable.

The Rerouting of Global Crude Flows

The rerouting of crude flows to avoid the Strait altogether is altering established supply chains, leading to longer transit times and increased freight rates. The Brent premium has widened as Hormuz reroutes take effect, reflecting the additional cost of alternative routing. For energy markets, this means a persistent risk premium on crude oil, regardless of underlying supply and demand fundamentals. The new rulebook in the Strait of Hormuz is a stark reminder that geopolitical risk is no longer an abstract concept but a tangible cost embedded in the price of global commodities.