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Another weekend, another set of burning tankers in the Strait of Hormuz. Iran's navy and its Revolutionary Guards said on Saturday, November 14, that more oil tankers had struck mines and caught fire in the world's most important oil chokepoint — the latest in a campaign that has turned the narrow waterway into the most dangerous shipping lane on earth. The exact number of ships hit this weekend is disputed even between the reports of the same day. The bigger numbers, the ones the United Nations has put on the record, are not disputed — and they are getting worse.
Here is what is claimed, what is confirmed, and what the figures actually say about a conflict that has now run for more than eight months.
What happened this weekend
According to Iranian statements carried by international media, fires broke out on tankers that struck mines in the strait on Friday and Saturday. The Revolutionary Guards said a tanker carrying liquefied gas hit a mine and suffered an explosion on Friday, releasing footage of a large plume of smoke rising from a vessel it said was carrying liquefied gas in the south of the strait. Early on Saturday, the Guards' navy said two oil tankers — one of them a supertanker — exploded and caught fire after striking a naval mine while trying to transit an unauthorised route with their radar and positioning systems switched off. Iran's conventional navy said separately that another tanker caught fire east of the strait after striking a mine in a prohibited zone.
The reports do not agree on the count. One account puts the Saturday total at three tankers; another, citing the same Iranian statements, says two; Al Jazeera's live coverage described a fifth tanker catching fire within 24 hours. No vessel was named in any of the statements, no flag or owner was given, and no navy, shipowner or maritime security authority had independently confirmed any of the incidents by the morning of November 14. That matters: every mine strike in this campaign is, so far, an Iranian claim reported by Iranian state media. The fires are real enough to film. The circumstances — which ships, which routes, whose mines — are not independently verified.
What is not in doubt is the pattern Iran is describing. Tehran has insisted since the war with the United States erupted in February that vessels obtain its authorisation to cross the strait, and it has attacked ships that do not comply. Its navy warned on Saturday that any tanker entering the prohibited zone east of the strait would face the same fate, accusing vessel owners of risking their assets by relying on assurances from US President Donald Trump. The United States, for its part, has imposed a naval blockade on Iranian ports in response to Tehran's choking of the trade route — and US Central Command's commander, Admiral Brad Cooper, declared in August that all Iranian sea mines had been cleared from the internationally recognised transit routes. The two claims cannot both be true, and the weekend's fires do not settle which one is.
The numbers behind the headlines
The most authoritative figures come from the United Nations. Briefing the Security Council on Friday, November 13, UN Assistant Secretary-General Khaled Khiari said the International Maritime Organization had confirmed 134 incidents in and around the Strait of Hormuz since February, with 25 seafarers killed — and October was the worst month yet. Those are confirmed incidents, counted by the IMO, not claims by either side.
The trend inside that total is steep. According to data from the Washington Institute for Near East Policy, there were 37 attacks in October — the highest monthly tally since the conflict began in late February — and at least 10 ships were hit in the first 10 days of November alone. Iranian media reported on Thursday that four oil tankers had been hit by explosions in the waterway, adding that the vessels had ignored warnings and entered restricted areas. Added to the claims made since October 31, one count puts the number of merchant ships Iran says have struck mines in the strait at more than 20 — a tally growing considerably faster than anything outside Tehran can verify.
Put together, the picture is of a campaign that is accelerating rather than winding down: a record October, a fast November, and a weekend in which Iran claims up to five tankers in a single day. The human cost is already measured in dozens of dead seafarers. The economic cost is measured in the risk premium on every barrel that passes through a strait carrying a substantial share of the world's oil.
Why the strait matters this much
The Strait of Hormuz is a narrow passage between Iran and Oman, barely 33 kilometres wide at its narrowest point, and it is the only sea route out of the Persian Gulf. Roughly a fifth of the world's petroleum liquids pass through it. There is no practical alternative: pipelines bypassing the strait carry only a fraction of the volume, and the rest of the world's oil has to go through the water.
That is why mines are such an effective weapon there, and why the dispute over them matters beyond the ships involved. A mine does not need to sink a tanker to close a strait. It needs only to make insurers, owners and crews unwilling to sail through it. Iran's strategy, as its own statements describe it, is exactly that: declare zones restricted, demand authorisation, and make the cost of defiance visible in burning hulls. The US strategy, as its blockade and mine-clearing claims describe it, is to insist the recognised transit routes are safe and to punish Iran's economy in return. Both sides are, in effect, fighting over who gets to define which water is safe — and the tankers caught between them are the ones paying for the argument.
For now, the honest summary is this: the United Nations counts 134 confirmed incidents and 25 dead since February, October was the worst month, November is running faster, and this weekend Iran claims several more tankers hit mines — claims no independent source has yet confirmed, and whose exact count even the reporting cannot agree on. What happens next depends on whether the pattern breaks or keeps climbing. Nothing in the last eight months suggests it will break on its own.
For the wider picture of dangerous shipping lanes, see why the Black Sea became the world's deadliest shipping route and what happened when a tanker struck a cruise ship on the Mississippi. For practical preparation, our guide to how long stockpiled food really lasts remains our most-read explainer.