The Russian Black Sea Fleet is scrambling to adapt to the persistent threat posed by Ukrainian naval drones, resorting to the installation of improvised metal mesh structures, popularly known as “cope cages” or “mangals.” According to reports from Russian military channels, these protective grids have been identified on Project 21980 “Grachonok” anti-sabotage boats. This defensive measure follows the recent successful strike by the Ukrainian Navy, which neutralized “Grachonok” and “Sobol” class vessels tasked with guarding the Kerch Bridge, as reported by the official press service of the Ukrainian Navy.
These structures, which were previously used to protect Russian armor against top-down drone attacks on the battlefield, have now been transposed to the sea. The decision highlights a significant vulnerability: Russian vessels lack the electronic warfare and point-defense systems necessary to intercept small, maneuverable, and low-profile surface drones. By welding these metal frames onto their decks, the Russian military hopes to mitigate the impact of explosive payloads, though military experts argue that such retrofitting is largely ineffective against the sophisticated guidance systems of Ukrainian unmanned vessels.
This trend serves as a visual indicator of the broader attrition faced by the Russian Black Sea Fleet. Since the start of the full-scale invasion, the inability of the Russian military to secure the waters around occupied Crimea has forced them into an increasingly defensive and reactive posture. The reliance on “cope cages” at sea mirrors the degradation of equipment seen on land, where improvised armor has become a staple of desperation. Despite these attempts to fortify their fleet, the tactical reality remains unchanged: the Ukrainian Navy continues to dictate the terms of engagement in the Black Sea, effectively denying Russia the ability to operate with impunity. The “mangal” strategy is not a solution, but a symptom of a fleet that has been outmatched by asymmetric innovation.