IRGC says it seized an Anduril Dive-LD underwater drone at Hormuz

Iran's Islamic Revolutionary Guard Corps navy said on 8 September that it captured a U.S. unmanned underwater vehicle at the entrance to the Strait of Hormuz before dawn. The claim, issued as Statement No. 12 and carried by state television and the IRGC's Sepah News outlet, has not been confirmed by the United States.

The Guards called the vehicle one of the "most modern, smart and unmanned submarines" in the U.S. fleet and said it was delivered in 2025. Iranian media named the model as Dive-LD, built by Anduril Industries and handed to the U.S. Navy's Unmanned Undersea Vehicle Group 1 last year. Tasnim put the hull at about 5.8 metres long, 1.2 metres across and close to three tonnes. Published specifications for the type list endurance of up to ten days and a working depth of about 6,000 metres. The stated jobs are reconnaissance, seabed mapping, mine hunting and inspection of cables and pipelines.

The IRGC said images would follow in the coming hours. By late Tuesday those pictures had not been independently verified. Washington had not issued a loss report. In past incidents in the Gulf, Iranian television has shown captured U.S. surface drones. An underwater hull is harder to display and harder for outsiders to authenticate from a still photograph.

The location is the reason the claim matters even before the pictures arrive. Iran has kept a blockade on the Strait of Hormuz since the wider war with the United States opened in late February. The strait is the usual path for about a fifth of the world's seaborne oil and a large share of liquefied natural gas. The United States has answered with its own restrictions on Iranian ports. Brent crude was already near $97 a barrel on 8 September after Houthi strikes on Saudi energy sites. A confirmed loss of a U.S. undersea drone at the choke point would add a new tool to the local fight: hunting robots on the seabed, not only ships on the surface.

Anduril's Dive-LD is built to run long missions without a crew. That is the point of the class. It is also the weakness. A vehicle that spends days underwater is a vehicle that can be found, snagged or forced up if the other side knows where to look. The Guards described the seizure as a "complex intelligence and operational" action. That phrase is standard IRGC language. It does not say whether the hull was running, drifting or already in trouble.

If the Dive-LD is real and in Iranian hands, two clocks start. One is technical: how much of the vehicle's software, sensors and mission log can be copied before the batteries die or the casing is opened badly. The other is diplomatic: whether the U.S. Navy treats the event as a combat loss inside an existing war or as a separate provocation that needs its own reply. Neither clock can start in public until someone outside Tehran sees the hull.

Until then the record is a statement, a model name and a strait that is already closed to ordinary traffic. The pictures, if they come, will decide whether 8 September is logged as a capture or as a claim.