Claim: Two Supertankers Hit Mines in Hormuz, Iran's Guard Says

Iran's Revolutionary Guard says two supertankers carrying 4.5 million barrels of crude hit sea mines in the Strait of Hormuz, according to Russian state news agency TASS, a claim nobody has independently confirmed ^[1].

This story is developing, and what follows rests on a single relayed statement.

What is being claimed

TASS reported on October 23 that the Islamic Revolutionary Guard Corps, Iran's parallel military force, said the two ships struck mines while trying to pass through the southern part of the strait ^[1]. The IRGC called them "violator supertankers" and said they were using an unauthorized southern route ^[1]. Those are the IRGC's words and its framing, not established facts.

According to the IRGC account, explosions and a strong fire disabled the engine rooms of both vessels ^[1]. The ships then stopped off the strait's southern coast, and their crews evacuated ^[1]. The IRGC put the combined cargo at 4.5 million barrels of crude ^[1].

That works out at an average of 2.25 million barrels a ship. A very large crude carrier typically holds about two million barrels, so the figure describes two full ships.

The statement as relayed names no ship. It gives no flags or operators, no exact position and no crew identities ^[1]. It does not say whether anyone was hurt or whether oil leaked.

Why this strait

The Strait of Hormuz is the sea passage between Iran and the Arabian Peninsula, the only exit from the Persian Gulf to the open ocean. Before the war, about one-fifth of global oil consumption passed through it, according to Al Jazeera ^[2].

That is why a single disabled tanker there is news far beyond the Gulf. Two loaded supertankers would be a large piece of cargo and a larger signal. Insurers, the companies that hire tankers to carry cargo and the captains who sail them read such reports to decide whether a route is worth the risk.

A mine also makes no distinction between ships. It waits in the water until a hull touches it. If the IRGC's account is right, the danger is not confined to two vessels but extends to anything that takes the same lane.

The strait has been a focus of tension between the United States and Iran since the US-Israeli war began in late February, Al Jazeera reported ^[2]. It also reported that Tehran has demanded that ships seek its authorization before transiting ^[2].

That demand is the backdrop to the IRGC's language about an "unauthorized" route. The wording ties the strikes to the lane the ships chose: it calls them violators and says they were not cleared to be there.

A second claim in six days

This is not the first such statement. Al Jazeera reported that the IRGC made a separate claim on October 17 that two tankers caught fire after hitting mines in the strait ^[2]. It is not known whether the October 23 account describes a new incident or the same one retold, or whether the two are connected.

Two reports of two tankers in six days could mean two incidents. They could also mean one incident described twice, or a pattern of messaging by one side in a conflict. The earlier claim shows the kind of statement the IRGC is making. It is not evidence that this one is true.

The channel matters too. TASS is a state news agency in Russia, relaying a statement from a military force that is a party to the conflict. That makes it a faithful record of what the IRGC wants said. It is not a witness to what happened on the water.

What would settle it

Ships are hard to hide. A supertanker with a disabled engine room and an evacuated crew leaves traces: a statement from its owner, a notice from its flag state (the country whose flag it sails under and whose rules it follows), a rescue, a tow, a satellite image, a change in an insurer's quote. No such trace has been reported so far.

Until someone other than the IRGC speaks, the fair description is that Iran's Revolutionary Guard says it happened. The paper will update this story as the ships are named or the claim is contradicted.