Ukraine's DELTA combat system has once again demonstrated its compatibility with NATO standards, integrating unmanned platforms and radars during the REPMUS 2026 maritime exercise. According to Ukraine's Ministry of Defence, all participating assets transmitting data in accordance with NATO standards were successfully connected to the system.
The exercise marked Ukraine's third participation in REPMUS, an annual event led by the Portuguese Navy that focuses on testing and employing unmanned systems in maritime operations.
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Ukrainian service members from different military services and branches used DELTA to coordinate reconnaissance, maritime surveillance, maneuvering, escort missions, and simulated engagements alongside Allied forces. They also shared battlefield experience with international partners, particularly regarding the use of unmanned systems at sea.
A key result was the successful integration of all assets transmitting telemetry in accordance with NATO standard STANAG 4817, the Ministry of Defence reported. These included unmanned aerial, surface, and underwater platforms, as well as radars.
The Ukrainian team also highlighted DELTA's ability to operate without interruption under unstable connectivity conditions. Its members praised the convenience of video streaming through the system's Vezha module compared with other platforms.
REPMUS provides an opportunity to test interoperability between systems operated by different countries and to evaluate how unmanned platforms can work together in multinational operations. The successful integration of these assets further demonstrates DELTA's ability to support coordinated operations across multiple domains.
DELTA also served as the primary command-and-control platform for a multinational team during REPMUS 2025. At that exercise, the system integrated more than 100 unmanned platforms operating across different domains.
Ukraine's Ministry of Defence says the country will continue sharing its combat experience in employing unmanned systems and strengthening interoperability with NATO member states.
The ministry has also highlighted DELTA's role in documenting battlefield results. In a previous report, it said the system records more than 6,600 enemy targets hit per day.
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