Navy’s Lanternfish Exercise Puts Undersea Drone Detection Tech to the Test

Ultra Maritime and Anduril Industries have demonstrated the ability to detect and track unmanned underwater vehicles during the U.S. Navy’s Lanternfish exercise, according to Naval News. The exercise, designed to stress-test emerging counter-UUV technologies, marked a concrete step in the Navy’s effort to field operational responses to a threat class that has grown significantly more capable and accessible in recent years. As adversary navies and non-state actors expand their use of autonomous undersea platforms, the ability to reliably cue, classify, and track UUVs in realistic at-sea conditions has become a priority the service can no longer defer. The growing role of unmanned systems on both sides of contested undersea environments sits alongside broader autonomy pressures documented across aviation, where the unmanned aircraft future is already forcing structural changes in legacy manned-platform industries.

Lanternfish is a Navy-run experimentation event structured to accelerate the maturation of counter-UUV capabilities by putting candidate systems against realistic threat surrogates at sea. The exercise provides a live operational environment that laboratory and range testing cannot fully replicate, allowing program offices and industry partners to observe how sensors, networks, and autonomous systems actually perform under realistic acoustic and environmental conditions. Ultra Maritime, a subsidiary of Ultra Electronics focused on undersea warfare systems, brought acoustic sensing technology to the exercise. Anduril, known for its Lattice software-defined command-and-control platform, contributed the autonomy and data-fusion layer that allows distributed sensor inputs to be processed into actionable tracks.

What the Companies Demonstrated

The integration of Ultra Maritime’s underwater acoustic sensors with Anduril’s Lattice platform produced a system capable of detecting and maintaining tracks on UUV targets operating in the exercise area, according to Naval News. The combination is significant because it pairs established undersea sensing pedigree with a modern software backbone built explicitly for fusing data across heterogeneous sensor networks. Lattice has been applied across multiple domains in prior Anduril programs, and its application to the undersea counter-UUV problem represents an extension of the platform into a mission set where low-signature targets and complex propagation environments make automated track management especially difficult.

Naval News reported that the two companies successfully tracked UUV threats during the exercise, though specific performance metrics, engagement ranges, and the number or type of surrogate targets employed were not publicly disclosed. Officials have not confirmed whether the demonstration will directly inform a near-term procurement decision or whether Lanternfish results feed into a broader Navy program of record for counter-UUV systems.

Strategic Context and Industrial Implications

The Lanternfish exercise reflects a broader institutional recognition within the Navy that undersea warfare is no longer defined solely by manned submarine competition. UUVs have proliferated rapidly, driven by falling costs, commercial autonomy technology, and deliberate investment by near-peer competitors. China in particular has expanded its undersea unmanned program substantially, a dynamic that sits alongside the kind of systems-level military investment Naval News and other defense outlets have tracked across surface, air, and land domains. The ability to detect and track small, slow-moving, acoustically quiet platforms in cluttered littoral or open-ocean environments remains a hard problem, and Lanternfish-style exercises are how the Navy identifies which technical approaches are ready to advance.

For Ultra Maritime and Anduril, a successful Lanternfish demonstration positions both firms favorably in what is expected to be a competitive market for counter-UUV systems as the Navy formalizes requirements. Ultra Maritime brings decades of sonar and underwater systems experience, while Anduril has moved quickly to establish itself as a prime contractor capable of integrating complex autonomous systems across service branches. Whether the collaboration deepens into a formal teaming arrangement for future competitions was not addressed in the Naval News report, but the exercise result gives both companies a credible operational data point at a moment when the Navy is actively evaluating its counter-UUV architecture options.