17 April 2026

The Strait of Hormuz in Brief: Non-Oil Shipments and Effects on U.S. Shippers

Frittelli, John; Goldman, Ben

Before U.S. and Israeli military operations began against Iran on February 28, 2026, the average number of ships from various countries transiting through the Strait of Hormuz (the Strait) was about 130 each day.1 As of April 7, 2026, only a handful of ships have risked the transit each day since the start of the operations for fear of attack by Iranian forces, which are reportedly negotiating with and permitting selected ships to pass through the Strait. Before the conflict began, the Strait was open to ship navigation without constraint as per long-standing international law,2 but since the conflict began, Iran has asserted control over the Strait. 

The U.K. Maritime Trade Operations center has recorded 17 attacks on vessels since March 1, 2026, with several crew members killed or seriously injured.3 An estimated 1,000 ships are in a holding pattern in the Persian Gulf region: 800 ships in the Persian Gulf inside the Strait waiting to transit eastbound and 200 ships outside the Strait waiting to transit westbound.4 The announcement of a two-week ceasefire on April 7, 2026, to allow these ships to pass through the Strait without being fired upon does not appear to require Iran to give up its control over the Strait.

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