Strait of Hormuz Closure Disrupts Shipping, Threatens Global Oil Supply

The ongoing conflict in the Middle East has led to a significant disruption in shipping traffic through the Strait of Hormuz, raising concerns about potential global oil supply shortages and economic repercussions. Iran’s actions are effectively a de facto blockade, squeezing transit to a trickle and impacting energy markets worldwide.

The Strategic Importance of the Strait of Hormuz

The Strait of Hormuz is a critical maritime chokepoint, responsible for carrying approximately a quarter of the world’s seaborne oil trade, as well as substantial volumes of liquefied natural gas and fertilizers ¹. The strait is just two miles wide in its shipping lanes ³, making it easily susceptible to disruption.

Current Situation: A Drastic Reduction in Traffic

Since the beginning of the war on February 28, 2026, shipping traffic through the Strait of Hormuz has plummeted. Only 21 tankers have transited the route, compared to over 100 daily before the conflict ¹. Thousands of seafarers are currently stranded aboard vessels waiting near the choke point, with roughly 400 vessels operating in the Gulf of Oman ¹.

Iran’s Selective Approach and Chinese Interests

Whereas maintaining a tight grip on the strait, Iran appears to be selectively allowing some non-Iranian oil cargo through via negotiated safe voyages ¹. Notably, Tehran has largely avoided targeting ships linked to China ¹. Dozens of vessels have broadcast locations referencing Chinese ownership or crew presence in an attempt to secure safe passage.

Global Economic Implications

The disruption is already impacting global markets. Brent crude prices have risen above $90 per barrel ². Higher energy, fertilizer, and transport costs – including freight rates, bunker fuel prices, and insurance premiums – are expected to increase food costs and intensify cost-of-living pressures, particularly for vulnerable economies ². This shock comes at a time when many developing economies are already struggling with debt and limited fiscal capacity.

Regional Developments and Alternative Routes

An Indian liquefied petroleum gas (LPG) carrier, the Shivalik, recently arrived at Mundra Port in Gujarat, India, having transited the Strait of Hormuz amidst the ongoing conflict ¹. Some vessels are exploring alternative ports, but the viability of these options remains limited.

Looking Ahead

The duration and scale of the disruption in the Strait of Hormuz will be critical in determining the overall global economic impact. Continued monitoring of the situation, particularly its implications for vulnerable economies, is essential ². The situation underscores the vulnerability of critical maritime chokepoints to geopolitical tensions and their potential to transmit shocks across supply chains and commodity markets.