Bold opening: The Strait of Hormuz sits at the heart of the global oil market, and the widening Iran war threatens to choke energy supply as tanker traffic slows to a crawl. If you want to understand why this narrow passage matters so much, you’re about to learn the essentials in clear terms.
The Strait of Hormuz is the narrow gateway between the Persian Gulf and the Gulf of Oman, about 33 kilometers wide at its tightest point. Roughly a fifth of the world’s crude oil passes through this slender waterway. Tankers loading oil and gas from Saudi Arabia, Kuwait, Iraq, Qatar, Bahrain, the UAE, and Iran traverse this route, with the vast majority heading toward Asian markets. Any disruption to traffic here reverberates through global oil trade and prices.
Industry watchers warn that even a partial slowdown could be absorbed by producers for a short period, but a prolonged closure—weeks to a month or more—could push crude prices well above $75 per barrel and lift European natural gas prices toward crisis levels seen in 2022. As Hakan Kaya, a senior portfolio manager at Neuberger Berman, put it, the stakes are enormous and the impact would be felt across markets.
Key facts about Hormuz and the current conflict:
- A pivotal global shipping lane: The strait links the Persian Gulf to the Gulf of Oman, enabling ships to reach the wider world. While Iran and Oman claim territorial waters in the strait, it is widely treated as an international waterway open to all vessels. Dubai sits along this important corridor, highlighting its regional relevance.
- A long-standing trade artery: Historically, Hormuz has moved goods such as ceramics, ivory, silk, and textiles. In contemporary times, it serves as the path for supertankers carrying oil and gas from producers including Saudi Arabia, Kuwait, Iraq, Qatar, Bahrain, the UAE, and Iran. Most flows head to Asia, with China remaining a key customer for Iranian oil.
- Alternatives exist, but they are limited: There are pipelines in the region that could bypass Hormuz, yet the U.S. Energy Information Administration notes that most volumes passing through the strait have few viable exit alternatives, making Hormuz a critical chokepoint.
- Threats and price spikes: Historical tensions and disruptions around Hormuz have previously driven global energy prices higher. The current crisis follows a period of intense conflict and naval activity in the region.
Is Hormuz actually closed?
Iran has attacked ships in the strait and warned that passing vessels would be targeted, effectively threatening a closure. A move by U.S. authorities to protect tankers in the area could help restart traffic, though rhetoric remains heated. In mid-February, Iran temporarily shut sections of the strait for a military drill, and oil prices responded with notable increases in the days that followed.
Past behavior and present risk:
In past decades, Iran has harassed shipping through Hormuz and, during the Iran–Iraq war in the 1980s, both sides attacked vessels and laid mines to disrupt traffic. However, a full, sustained closure has not occurred since the 1980s, even amid intensive conflict and outside bombardments in later years. The current situation still carries the risk of renewed disruption, given the strategic importance of Hormuz and ongoing regional tensions.
Global shipping activity and immediate impacts:
Major carriers have issued advisories and suspended operations in the area. Maersk—one of the world’s largest shipping companies—announced a suspension of all vessel crossings through Hormuz until further notice, with other major lines such as Hapag-Lloyd, CMA CGM, and MSC following suit. Experts explain that insurers are reluctant to back voyages through a compromised strait, and vessels already in the Gulf face uncertainty about their next moves.
Current logistics picture:
An estimated 3,200 ships—about 4% of global tonnage—are not moving within the Persian Gulf region, per Clarksons Research. Of these, roughly 1,231 ships may operate only within Gulf waters. About 500 ships, representing about 1% of global tonnage, are waiting outside Gulf ports off the UAE and Oman, awaiting direction as the situation evolves.
Bottom line:
Hormuz remains a linchpin of global energy flows. The extent and duration of any disruption will shape oil prices, insurance availability, and shipping patterns in the weeks ahead. As markets and policymakers weigh options, the question remains: how will the world adapt if Hormuz becomes less reliable as a steady conduit for oil and gas?
Source note: Jon Gambrell and Mae Anderson contributed reporting from New York."
