The closure of the Strait of Hormuz by Iran has had a profound impact on global oil and gas flows, raising concerns about energy security worldwide. This strategic waterway is vital for approximately 20 percent of global liquefied natural gas trade and handles about 20 million barrels of oil per day.

Since the onset of the war on Iran on February 28, 2026, which began with US and Israeli bombings, Iran has launched missile attacks targeting civilian infrastructure, including oil and gas installations. As a result, at least 21 commercial vessels have reported incidents in the Gulf or Strait of Hormuz since March 1, 2026.

The Iranian actions have led to extensive damage, particularly affecting Qatar’s Ras Laffan Industrial City, and have prompted European nations and Japan to express their readiness to ensure safe passage through the strait. Leaders from Britain, France, Germany, Italy, the Netherlands, and Japan condemned the attacks on unarmed commercial vessels in the Gulf, emphasizing the global ramifications of Iran’s actions.

In response to the escalating crisis, the International Energy Agency authorized a coordinated release of strategic petroleum reserves to stabilize energy markets. This decision comes as European gas prices have surged by over 60 percent since the conflict began, with a notable 25 percent increase on a specific Thursday.

Japan, which relies on the Gulf for 95 percent of its crude oil supplies, is particularly vulnerable to these disruptions. The impact of the conflict is expected to stretch into the future, with analysts predicting a significant rise in energy prices.

Furthermore, the conflict has resulted in the deaths of approximately 1,200 people, including Iran’s supreme leader, Ali Khamenei. The ongoing violence and instability in the region continue to pose risks to international shipping and energy supplies.

As the situation develops, the leaders have called for an immediate comprehensive moratorium on attacks on civilian infrastructure, highlighting the urgent need for de-escalation.

Details remain unconfirmed regarding the full extent of the damage and the potential for further military actions in the region. The international community is closely monitoring the situation as it evolves.

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The recent crossing of the Aframax tanker Karachi through the Strait of Hormuz marks a significant development in marine traffic, as it is the first non-Iranian tanker to do so with an active transponder system. This event occurred on March 15, 2026, and has implications for global oil markets and shipping safety.

The Karachi was transporting Das crude oil from Abu Dhabi when it entered Iran’s exclusive economic zone at 11:33 a.m. local time and crossed the Strait of Hormuz at 2:43 p.m. local time. This crossing is particularly noteworthy given the recent near-total closure of the Strait, which has led to a reduction in oil production by major producers in the Persian Gulf.

Prior to the Karachi’s crossing, more than 20 large-tonnage tankers had left the Persian Gulf, indicating a significant decrease in marine traffic in the region. The Strait of Hormuz is a critical route for oil and gas supplies from the Middle East, and disruptions in this area can have far-reaching effects on global energy prices.

As a result of reduced tanker traffic, the price of Brent crude oil has surged, exceeding $100 per barrel. This price increase reflects the heightened tension and uncertainty surrounding marine traffic in the region.

MarineTraffic noted, “An active AIS indicates that individual shipments are being granted coordinated safe passage,” suggesting that specific shipments may have negotiated safe routes amidst the ongoing tensions. This development could signal a shift in how marine traffic is managed in the region.

Furthermore, the crossing of the Karachi may represent a new phase in maritime operations, where certain shipments are able to navigate through sensitive areas with increased security measures. The implications for international shipping and regional stability are still unfolding.

Details remain unconfirmed regarding the broader impact of this crossing on future marine traffic and oil supply chains. Observers will be closely monitoring the situation as it develops, particularly in relation to the geopolitical dynamics involving Iran, the United States, and Israel.

As the situation evolves, the international community will be watching for further developments that could affect marine traffic and energy markets globally.

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The Strait of Hormuz has long been recognized as a critical maritime chokepoint for oil and gas shipments, with approximately 20% of global oil and gas passing through this vital route. Prior to recent developments, the strait facilitated a steady flow of marine traffic, with numerous vessels transiting daily to meet global energy demands.

Decisive Changes

However, on March 4, 2026, a significant shift occurred when no oil tankers passed through the Strait of Hormuz. This marked a stark contrast to the previous week, when 65 oil and chemical vessels had transited the strait on February 27, 2026. On that day, only five vessel crossings were recorded, leading to a 7-day moving average of crossings dropping to just 27.

Direct Effects

The absence of tanker activity represents a dramatic shift from conditions prior to the outbreak of hostilities. Iran’s General Sardar Jabbari stated that Tehran will now “not let a single drop of oil leave the region,” indicating a significant escalation in regional tensions. This has raised concerns among oil industry representatives, who noted that “the strait is effectively becoming inaccessible under current conditions.”

Expert Perspectives

Industry sources have echoed these sentiments, highlighting the difficulties faced by ships attempting to enter or exit the strait. An oil industry official remarked, “The market needs a lot more details” to assess the situation accurately. As the conflict continues, the long-term impact on global energy supply chains remains unclear, and details remain unconfirmed.

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