It Takes Weeks to Clear a Waterway and Only Hours to Close It Again

By EC Assets · Published 31 August 2026 · Updated 31 August 2026

A cleared shipping lane is not a resolved one.

The US military finished clearing sea mines from the international shipping routes through the Strait of Hormuz last week. On Sunday, US forces struck two Iranian rocket launchers on Larak Island, after Revolutionary Guard units were observed preparing rockets carrying sea mines for launch into the same waterway (US Central Command, 30 August).

Days between the two.

That gap is the story. Clearing a strait takes specialist vessels, weeks of work and a naval presence to protect the work while it happens. Closing one again takes a launcher and an evening.

Markets spent last week reading the conflict as an economic contest rather than a supply one. Brent gave back much of its risk premium. By Sunday night it was above $90 again (Bloomberg, 31 August).

This is not an event that resolves. It is a condition that has to be maintained continuously, by somebody, at a cost nobody publishes.

Roughly a fifth of the world's oil moved through that waterway before the conflict. Gulf exports have recovered to around 15 to 16 million barrels a day, against 22 to 24 before the war (Goldman Sachs).

Better. Not restored. And held in place by presence rather than by agreement.

At EC Assets, we separate risks that clear from risks that have to be held open. The second kind rarely appears in a scenario table.

Open is not the same as secure.