Hormuz Backlog of 1,500 Ships Will Keep Energy Markets on Edge Despite Talks

The U.S.-Iran preliminary memorandum has opened a path to clear the 1,500 ships stranded at the Strait of Hormuz, yet oil prices are set for an 8-week stabilization period that will test global supply chains. The 60-day negotiation window injects conditional optimism, but the physical backlog keeps tanker rates and insurance premiums elevated. For multinationals reliant on Persian Gulf transits, near-term relief is tempered by the largest maritime traffic jam in decades.

The Strait of Hormuz, effectively closed during the height of U.S.-Iran tensions, now faces the monumental task of clearing an estimated 1,500 vessels stranded in the Persian Gulf, as reported by The New York Times. A preliminary memorandum has opened a 60-day negotiation window for a comprehensive deal, but the physical backlog will take weeks to process. Gulf News reports that oil prices could require up to 8 weeks to stabilize even after transit resumes, reflecting the time needed to reposition tankers, reprice insurance, and reset supply schedules. The immediate shock is a massive, slow-moving unwinding of the world’s most critical shipping choke point.

The macro transmission works through energy cost passthrough. The de-escalation gradually extracts the geopolitical risk premium embedded in Brent crude futures, which had bubbled up to steep backwardation during the blockade. As that premium unwinds, inflation expectations for importing economies ease—though the 8-week oil adjustment means the disinflationary impulse will be felt only in the third quarter. Central banks, particularly in Asia, will see a delayed reduction in import-price pressure. The Indian rupee and South Korean won, both pressured by higher oil bills, could see a slow recovery, but only after credit-default swap spreads on energy-intensive corporates start to tighten—a move that hinges on the backlog clearing first. Phased sanctions relief further limits how quickly trade finance can support Iranian oil flows, moderating any sudden supply surge.

Credit and corporate balance sheets face a staggered reckoning. Marine hull and cargo war-risk premiums, which had surged to multiples of peacetime rates to reflect the threat of military escalation, remain elevated because insurers require a sustained period of safe transits—something the 1,500-ship queue delays. Shipping companies are incurring demurrage costs, and some have invoked force majeure clauses, generating a trail of legal claims. The 60-day negotiation window introduces binary snapback risk: a breakdown in talks would rapidly reverse the easing of sanctions, stranding not only the current backlog but potentially thousands more vessels. The much-discussed reconstruction financing that would accompany a final deal is contingent on a durable agreement, leaving sovereign credit and project-finance exposure in limbo until the window closes.

Cross-border effects are most acute for Asia. Japan, India, and South Korea, which depend on Hormuz for a large share of crude imports, will see a gradual softening of bunker fuel surcharges and shipping delays, but the 8-week price adjustment defers the full benefit. The Basra-to-Indian west coast tanker run, which had been trading at hefty premiums, will normalize only as the backlog clears and oil flows stabilize—a process that could temporarily oversupply tonnage and depress spot tanker rates. European and U.S. multinationals face a phased opportunity: as sanctions are relaxed, Iranian energy and infrastructure assets become accessible, but extraterritorial compliance complexities persist, especially for banks and insurers navigating secondary sanctions. The 60-day clock means that any saber-rattling could snap back the risk channel, forcing logistics teams to keep contingency plans active.