IRGC Seizes U.S. Navy Drone Sub in Strait of Hormuz

Another Unmanned Vessel Seized in a Volatile Waterway

Iran’s Islamic Revolutionary Guard Corps says it has recovered an American underwater drone from the Strait of Hormuz, marking the latest in a string of incidents involving unmanned U.S. Navy assets in the region. According to a report by The Maritime Executive, U.S. Central Command has confirmed the event took place, saying the autonomous underwater vehicle (AUV) had malfunctioned more than a day before it was picked up while conducting surveillance work tied to ongoing regional operations.

A CENTCOM spokesperson told NewsNation that the device was an older model and did not carry classified sonar, radar, or other sensitive equipment. Based on its hull markings and general design, the drone appears to be an Anduril Dive-LD, a type used by specialized U.S. Navy units. Iranian broadcaster PressTV subsequently published close-up video of the vehicle’s sensors, panels, fasteners, and other components, effectively allowing outside observers to identify the model through open-source analysis.

A Recurring Pattern

This is not the first time Iranian forces have taken hold of unmanned U.S. Navy vessels operating in the Gulf region. In 2022, Iranian units seized Saildrone Explorer surveillance craft on two separate occasions — once when an IRGC support vessel towed one away in the Arabian Gulf before releasing it under pressure from U.S. forces, and again when an Iranian frigate pulled two Saildrones from the water in the Red Sea, returning them a day later after similar pushback.

The current incident comes amid what the source describes as extensive use of unmanned maritime systems by Central Command in its ongoing standoff with Iran, spanning intelligence, surveillance and reconnaissance work, downed-pilot search and rescue, and kinetic missions. The report notes this is the first conflict in which unmanned maritime systems have taken on such a visible role in U.S. military operations.

What This Means for Commercial Shipping and Surveyors

While this episode centers on military hardware rather than merchant tonnage, it is a pointed reminder of how contested the Strait of Hormuz has become as an operating environment. A significant share of the world’s seaborne crude oil and LNG passes through this chokepoint, and incidents involving naval assets — whether drones, warships, or tankers — tend to signal broader instability that ripples outward into commercial shipping risk profiles.

For ship owners, managers, and charterers routing vessels through the Strait, episodes like this reinforce the value of disciplined pre-transit planning and documentation. Vessels calling at or transiting near contested waters benefit from having up-to-date condition surveys, verified bunker quantities, and clear cargo documentation before entering higher-risk zones, since delays, diversions, or unexpected boardings can complicate insurance and charter-party positions if a vessel’s condition and cargo status aren’t independently verified beforehand. Bunker surveys in particular take on added importance here: any unplanned detour, slow-steaming adjustment, or extended loitering near a chokepoint under heightened military activity can quickly turn into a dispute over fuel consumption and remaining on-board quantities if there is no independent record to point to.

The recurring pattern of drone seizures — now three publicized incidents since 2022 — also illustrates how quickly unmanned systems have become part of the operational backdrop in the Gulf, alongside conventional naval and commercial traffic. Operators transiting the area should treat elevated military activity, including unmanned system incidents, as a standing input into voyage risk assessments rather than a one-off news item, and should keep survey and inspection paperwork current enough to withstand scrutiny if a call, transit, or bunkering operation is disrupted.

Looking Ahead

CENTCOM’s characterization of the captured drone as an older, non-sensitive unit suggests Washington is seeking to downplay the operational significance of the loss. Even so, the identification of the vehicle via publicly released footage — and the broader pattern of Iranian forces intercepting U.S. unmanned assets — points to a Gulf environment where commercial and military maritime activity remain closely intertwined. For the shipping industry, the practical takeaway is less about the drone itself and more about the surrounding risk environment: verified documentation, careful voyage planning, and independent surveys remain the best tools available to manage exposure when transiting a strait this contested.

Reviewed by Ibrahim Halil Ceylan, Marine Surveyor at Apeks Marine.