Disruption of Shipping Traffic Through the Strait of Hormuz

As of April 21, 2026, shipping traffic through the Strait of Hormuz remains largely halted, with only three vessels transiting the waterway in the past 24 hours. This significant decline follows a period of heightened tension between the United States and Iran, which has led to a blockade of Iranian ports by the U.S. and retaliatory restrictions imposed by Tehran. Historically, the Strait of Hormuz is a critical maritime route, handling approximately one-fifth of the global oil and liquefied natural gas supply.

Hormuz Strait traffic halted, pushing oil prices up 5%The Straits TimesShipping Crisis in the Strait of Hormuz: Traffic Halted AgainUsNews and World ReportStrait of Hormuz traffic halted despite Iran’s open passage claim

The current situation escalated after the U.S. and Israel initiated military actions against Iran on February 28, 2026. Following these events, Iran briefly declared the strait open on April 17, allowing some vessels to pass. However, this declaration was short-lived, as Iran reimposed restrictions and fired upon vessels shortly thereafter. The U.S. military's seizure of an Iranian tanker in international waters has further exacerbated tensions, jeopardizing a ceasefire and peace talks.

Hormuz Strait traffic halted, pushing oil prices up 5%

The ongoing blockade has left approximately 20,000 seafarers stranded in the Gulf, with hundreds of ships unable to navigate the strait. Arsenio Dominguez, secretary-general of the UN's shipping agency, emphasized the risks to seafarers, stating, "We cannot put at risk the lives of the seafarers." The disruption has also led to a surge in oil prices, with Brent crude rising over 5% amid fears of prolonged supply issues. Analysts note that the market is reacting to geopolitical developments rather than economic fundamentals, indicating a volatile environment for oil prices.

Shipping Crisis in the Strait of Hormuz: Traffic Halted Again

Critics of the U.S. blockade argue that it has intensified the crisis, leading to unnecessary risks for maritime operations. The Iranian military has claimed that it successfully navigated an Iranian tanker into its territorial waters despite U.S. threats, highlighting the ongoing defiance against the blockade. Shipbroker BRS reported that 61 non-Iran-related supertankers are currently trapped in the Gulf, with many laden with significant oil cargoes, further stressing the urgency of the situation.

UsNews and World ReportThe Straits TimesHormuz Strait traffic halted, pushing oil prices up 5%Shipping Crisis in the Strait of Hormuz: Traffic Halted Again

There are discrepancies regarding the actual number of vessels transiting the Strait of Hormuz. While some reports indicate a complete halt in maritime traffic, others suggest that a few vessels have managed to navigate the strait. This inconsistency reflects the chaotic nature of the current maritime environment and the challenges in obtaining accurate shipping data.

The Straits Times

• “We cannot put at risk the lives of the seafarers,” — Arsenio Dominguez, Secretary-General of the UN's Shipping Agency

UsNews and World Report

• “At a time when the world is desperate for crude oil, an additional two million barrels slipping out of the Middle East Gulf would be gratefully received,” — BRS Report

The Straits Times

• “Even vessels that seemingly check the publicly known boxes for successful transit through both blockades can find themselves in danger and unable to pass,” — BRS Note

The Straits Times

The situation remains fluid, with traders and analysts closely monitoring developments. Any announcements from Iran's Foreign Ministry or the U.S. regarding the blockade could significantly impact shipping traffic and oil prices in the coming weeks. The April 30 deadline for potential normalization of traffic is particularly critical, as traders remain skeptical about the likelihood of a resolution under current conditions.

Shipping traffic through Strait of Hormuz remains largely halted