Status of the Strait
The Strait of Hormuz sits at the center of one of the world’s most important maritime corridors. Before the conflict, it carried around 20 million barrels per day of crude oil, condensate, and petroleum products — about a quarter of the world’s seaborne oil trade — and nearly one-fifth of global LNG trade. The first-order effects of its closure landed predictably on petroleum products — crude, gasoline, diesel, jet fuel, and naphtha, the refinery output that many plastics and chemicals industries are built on. Rising energy costs rippled across the economy, disrupting supply chains and hitting industries from generic drug manufacturing to air travel.
The Strait’s importance, however, extends well beyond oil and gas. Pre-closure, a third of the world’s helium, critical for semiconductor fabs and MRI machines, exited through Hormuz. So did nearly 50 percent of the world’s seaborne traded sulfur, which is used as an essential input to copper, nickel, and critical minerals processing. The ripple effects of the crisis have pinched inputs into supply chains that had no obvious exposure to the Middle East.
The geography of the Strait helps explain why the disruptions were so acute. At its narrowest, Hormuz is only about 21 miles wide, and commercial traffic is funneled into narrow, highly predictable shipping lanes between Iran and Oman. In peacetime, that system keeps traffic orderly. In wartime, it turns the waterway into a bottleneck. Large commercial ships have limited room to maneuver, and even a small number of mines, drones, missiles, or fast boats can disrupt a disproportionate share of traffic.
Throughout the active hostilities, the impact on shipping through the Strait was both physical and psychological. Iranian forces attacked, fired on, damaged, or seized commercial vessels, while the threat of additional strikes drove up insurance costs and shook shipowners’ confidence. U.S. interdiction efforts added another layer of disruption. The result was a maritime environment in which even limited attacks could have outsized effects, because companies do not need to see every threat materialize before deciding the risk is too high. In practice, uncertainty itself becomes a barrier to commerce.
That caution is visible in the traffic data. During the active hostilities, ship transits through Hormuz fell from pre-conflict levels of 120 to 160 vessels daily to single digits or low double digits for extended stretches, leaving hundreds of vessels stranded, delayed, rerouted, or unwilling to enter the waterway at all. The disruption extended across tankers, container ships, bulk carriers, general cargo vessels, offshore support ships, and specialized carriers — underscoring that this was a broader trade and logistics crisis unfolding at one of the world’s most important maritime chokepoints.
The following analysis highlights the impact of this standstill. It foreshadows the types of economic strain that could compound if disrupted transit becomes the new normal or, more dramatically, if recent ceasefire arrangements collapse.