The French Navy's FDI frigate conducted an anti-submarine warfare exercise with the Norwegian frigate KNM Thor Heyerdahl and a German Type 212A submarine during the morning hours of February 4, 2026. This marked the first Cooperative Anti-Submarine Exercise (CASEX) involving foreign warships as part of the FDI's deployment, aimed at testing the frigate's sensor suite, according to the French Navy. The exercise, part of the FDI's DLD deployment, tested the frigate's sensor capabilities through multinational cooperation, as stated in a French Navy post on X this morning. The involvement of international partners 🇫🇷🇳🇴🇩🇪 highlighted joint naval operations. No previous reports provide direct context for this development, confirming it as a new milestone in the FDI frigate's operational testing during its current deployment.
