The conflict in the Gulf has become a real-world test for autonomous mine-hunting technologies, particularly those developed by the United States and its allies.
Threat of Sea Mines
Mines rest on the seabed and detonate when they detect acoustic or magnetic signals, creating pressure waves that can break a vessel’s keel. Some float or rise through shallow waters; others move toward targets using propulsion systems. These threats have long been considered effective tools in naval warfare due to their low cost—according to Ian McFarlane of French defence group Thales, 'Mines are a very cheap way of waging a naval war, as the Royal Navy is acutely aware.'
Human-Centric Risk Assessment
Traversing the Strait of Hormuz remains one of the most dangerous maritime routes. Steve Cameron, former merchant navy officer and maritime consultant, notes that captains must agree with crews on taking such risks, obtain war risk insurance, and make final decisions based on assessed danger.
Autonomous Systems in Use
To reduce human exposure to these threats, modern mine-hunting operations increasingly rely on autonomous vessels monitored from shore stations. These systems require only about 20 personnel working in shifts—far fewer than traditional minehunters, which typically have around 80 sailors.
The technology has been under development for over two decades. During the Iraq War in 2003, the U.S. Navy used a torpedo-shaped robot called Remus 100 to scan seabeds down to approximately 100 feet using sonar, avoiding dangerous dives by divers.
Recent Incident Involving an American Submersible
In early September, Iranian forces hauled an uncrewed U.S. autonomous sub from the waters of the Strait of Hormuz. The Pentagon stated that this vessel was an Extra Large Uncrewed Underwater Vehicle (XLUUV) from Anduril and described it as malfunctioning with no classified equipment on board.
William Lupton, a naval analyst at Shephard Group, said that while no sailors were injured—'that was a drop in the ocean compared to having prisoners taken'—the incident highlights the strategic value of unmanned vessels: if captured, their onboard computer drives could be remotely wiped or destroyed via various means, potentially preventing data leakage.
Thales’ Uncrewed Surface Vehicle
The Thales Uncrewed Surface Vehicle (USV), developed for oil and gas industries, is equipped with sensors programmed to detect mines using sonar. It tows a 5-meter-long rectangular box resembling a torpedo that captures high-resolution seabed images and generates detailed 3D maps refined by artificial intelligence. The software identifies anomalies that resemble mine shapes, even when modern mines are designed to blend into surroundings.
Royal Navy’s Adoption of Robotics
Steve Prest, associate fellow at the RUSI defence think tank, introduced uncrewed mine hunting into the Royal Navy in 2014 and served as its first fleet robotics officer. He emphasizes that while robots can reduce risk—'you can't prove the negative, that no mines are there—you can significantly lower exposure.'
The U.S. robot systems either detonate a detected mine or mark it for avoidance. According to Prest, future developments will see AI analyzing data from these vessels in real time rather than waiting until return missions.
Fleet Integration Over Individual Vessels
Prest argues against focusing on individual unmanned assets: 'Uncrewed or autonomous vessels are not the operating system. They are applications running on it.' For this vision to succeed, he believes navies must operate as distributed forces sharing data through what he calls a cognitive architecture—where all elements of the fleet function cohesively and intelligently.
Insurance and Psychological Impact
Lloyd’s of London marine insurer Neil Roberts notes that while the U.S. claims it has cleared the Omani route with shipments at about 75% of pre-conflict levels, fear of unknown mine threats remains inescapable. The uncertainty over how many mines exist—or whether any remain—is a major psychological burden for shipping operations.
The use of autonomous vessels is now seen as essential to confronting this fear: 'An annoying buzz' from stealthier drones may be emerging—but robots are currently the primary tool used by navies to reduce exposure to sea mines without risking human lives.