Oil tanker rates hit record highs as US-Iran shipping attacks escalate in Persian Gulf

The cost of moving crude oil through the world’s most important shipping corridor just broke every record in the book. Very Large Crude Carriers, the supertankers that haul roughly two million barrels apiece, are now commanding rates of approximately 450 Worldscale points on the benchmark Gulf of Oman-to-China route. That translates to around $11.50 per barrel, a figure that would have seemed absurd six months ago.

The spike, recorded in the week ending September 11, 2026, represents the highest level since the VLCC freight index launched earlier this year. It was triggered by what the shipping industry is calling the largest wave of attacks on commercial vessels since the US-Iran conflict erupted in late February.

A week of chaos in the Strait of Hormuz

On September 9 and 10, Iran launched strikes on 10 ships operating near the Strait of Hormuz. That narrow waterway, roughly 21 miles across at its tightest point, is the bottleneck through which a massive share of the world’s seaborne oil passes every day.

The US responded by sinking five Iranian oil tankers after what it described as missile attempts on a US Navy warship. In the span of 48 hours, the world’s most critical maritime chokepoint went from tense to nearly impassable.

Meanwhile, Yemen’s Houthi rebels, aligned with Tehran, advanced to the strategic island of Perim in the Bab el-Mandeb Strait around September 11. That strait connects the Red Sea to the Gulf of Aden, making it the other major maritime pinch point for energy shipments heading toward Europe and beyond. Controlling Perim gives the Houthis a vantage point over essentially every vessel transiting between the Indian Ocean and the Mediterranean via the Suez Canal.

Why freight rates matter far beyond shipping desks

A VLCC carrying two million barrels at $11.50 per barrel in freight costs means a single voyage generates roughly $23 million in shipping revenue.

Insurance premiums for vessels transiting the Persian Gulf and Red Sea have climbed in lockstep with freight rates, and some underwriters are reportedly reassessing their willingness to cover the routes at all.

For oil-importing nations, particularly in Asia, the freight cost surge compounds an already difficult energy picture. China, Japan, and South Korea depend heavily on Middle Eastern crude arriving via these exact sea lanes.

The tanker supply problem nobody can fix quickly

When ships are sunk, rerouted, or simply idled because their operators refuse to enter a war zone, the effective global fleet shrinks. Building a supertanker takes roughly two to three years from order to delivery.

The US sinking of five Iranian tankers removed vessels that, while sanctioned or operating in gray markets, still contributed to the overall global supply of oil transport capacity.

Vessels avoiding the Strait of Hormuz or the Bab el-Mandeb must take longer paths, which means each ship makes fewer voyages per year.

The broader energy market implications extend beyond crude oil. Liquefied natural gas shipments transit many of the same routes, and LNG carrier rates have also climbed as operators factor in the same risk calculus. European buyers, who pivoted heavily toward seaborne LNG after cutting Russian pipeline imports, face yet another supply-chain vulnerability.

Disclosure: This article was edited by Editorial Team. For more information on how we create and review content, see our Editorial Policy.