The Strait of Hormuz is a commercial waterway that carries about a fifth of the world’s oil, and in practice it has never been fully closed for any sustained period. But the transit risk premium rises and falls with events in the Gulf — attacks on tankers, seizures, military build-ups and threats. Here is the current live signal.
What “closing Hormuz” would mean
A genuine closure — through mining, blockade or sustained attacks — would trap a large share of Gulf oil and LNG exports with no full alternative route, and oil prices would spike immediately. It is also widely seen as a step that would be extraordinarily costly to the country attempting it, since Gulf producers (and their customers, especially in Asia) depend on the strait too. That mutual dependence is why threats are common but a full, lasting closure has not happened.
How to read the day-to-day
Short of a closure, the strait can still see elevated risk: insurance and freight rates climb, some owners avoid the area, and traffic patterns shift. The live tanker map and the news-derived chokepoint status below are the fastest way to see whether transit is proceeding normally or under stress.