Iran Seizes US Unmanned Submarine in Strait
Iranian forces recovered an intact Dive-LD autonomous underwater vehicle, raising concerns in Washington about reverse engineering.
Updated on Nov. 7, 2026 in Military
Iran seized an intact US Dive-LD unmanned submarine in the Strait of Hormuz after the vehicle lost communication and remained afloat. The Islamic Revolution Guard Corps announced on September 8 that it captured a US unmanned underwater vehicle.
Why it matters
The seizure exposes the technology inside a US autonomous underwater system to a rival state. Washington fears Iran could reverse-engineer the submarine's physical components.
The Dive-LD submarine is valued at $2.5 million and weighs about three tons across a six-meter length. It can operate autonomously for up to 10 days and dive to depths of 6,000 meters.
The players
Anduril Industries
Anduril Industries is a defense technology company that manufactures autonomous systems, including the Dive-LD underwater vehicle.
Islamic Revolution Guard Corps
The Islamic Revolution Guard Corps is Iran's ideological military force, which announced the capture of the US submarine.
The details
The submarine was deployed to protect communication cables in the Gulf of Oman, and its computer shut down during the mission. The Pentagon confirmed the encryption keys and software were automatically wiped, while US safety rules barred installing explosive charges that could have destroyed the vessel remotely.
Timeline
September 8: The IRGC announced capture of the US unmanned underwater vehicle.
April 2025: The US Navy first received Dive-LD vehicles under the Pentagon's Replicator program.
Roadmap
The seizure follows Iran's 2011 capture of the US RQ-170 stealth drone, extending a pattern of Iranian recovery of advanced American unmanned systems. It marks the same kind of intelligence risk now moving into underwater autonomous platforms.
The incident raises questions about the security of autonomous defense systems deployed in contested waters. Readers should expect continued scrutiny of how US unmanned platforms protect data and hardware when they fall into adversary hands.
The takeaway
Autonomous systems that fail or are captured can expose advanced technology to rivals, making data-wipe and self-destruct safeguards critical to defense planning.
Further reading
Explore more military coverage for context on US unmanned systems and Gulf security.
Source note: This article includes information reported by Al Mayadeen English.
