Trace maritime warnings, international safety efforts and a later reported tanker attack. This timeline separates a call for safe passage from evidence that commercial traffic has actually normalized.
Selected maritime milestones through September 18, 2026. The final attack report remained unconfirmed by AP; no real-time passage guarantee is implied.
Dates without a time use the local date of the event.
After meeting on March 18-19, the IMO Council condemned threats, attacks and the purported closure of the strait.
The council response does not establish that ships could immediately transit safely.
A joint leaders' statement expressed readiness to contribute to efforts supporting safe passage through Hormuz and welcomed preparatory planning.
Readiness did not mean a mission had deployed. More signatories joined after publication.
The UK convened more than 40 countries and international organisations to discuss diplomatic pressure, possible economic measures and work with the IMO on stranded shipping.
The chair's statement recorded talks and follow-up discussions, not a reopened strait.
At a Hormuz summit, the UK and France said they were establishing a defensive multinational mission for merchant shipping protection and mine clearance.
Operations were conditional on suitable conditions following a sustainable ceasefire.
The UK and France convened defence ministers and representatives from 38 nations to announce political support for an independent defensive maritime mission.
The May 14 publication dates the meeting to May 12; operations still depended on a permissive environment.
A UK-France statement said Oman had agreed to cooperate on navigation safety in its territorial waters. The two governments remained ready to deploy the wider mission.
The statement did not confirm that the wider mission had deployed.
IMO reported that its Council again condemned attacks and called for non-discriminatory, unimpeded passage through the strait.
This is an institutional position on navigation. It is not evidence that restrictions or attacks had ended.
Iranian authorities, reported by AP
AP reported Iran's claim that it had struck a tanker attempting to pass through the strait the previous night.
AP explicitly said it could not immediately verify the claim. The date here is when that claim was reported.
Selected maritime milestones through September 18, 2026. The final attack report remained unconfirmed by AP; no real-time passage guarantee is implied.
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