From 31 August to 25 September 2026, MAHI took part in REPMUS (Robotic Experimentation and Prototyping using Maritime Uncrewed Systems), the annual multinational exercise hosted by the Portuguese Navy near Tróia with NATO and the European Defence Agency.
REPMUS brings navies, industry and academia together to test and integrate uncrewed maritime systems in realistic scenarios. It aims to improve interoperability, refine Tactics, Techniques and Procedures (TTPs), and speed up the adoption of emerging technologies by allied forces. Uncrewed systems give NATO new ways to keep a credible, persistent presence, even in remote areas, which strengthens deterrence and defence.
The exercise ran in four phases. It moved from integration and experimentation to realistic battle scenarios in the Atlantic off Portugal, including surveillance, identification, interception, shadowing and combat.
Throughout the exercise, MAHI’s Alpha-8 USV showed reliable endurance over long hours and distances, logging more than 600 nautical miles in demanding conditions. These included rough seas, night operations, GNSS and connectivity disruption, and a site-wide power outage.
Alpha-8 stood out in shadowing missions and in its STANAG 4817 integration. MAHI ranked among the top performers in navigation and ISR (Intelligence, Surveillance and Reconnaissance), drawing the attention of NATO and the US Navy.
NATO REPMUS 2026 confirms MAHI as a trusted partner for allied navies, delivering uncrewed surface capability that performs in the toughest conditions.
