Russia is installing anti-drone nets and cages to protect its submarines at naval bases, according to recent satellite imagery reported this week.

The move signals a shift in Russian naval strategy as Ukrainian drone capabilities expand. By fortifying its fleet, Russia aims to prevent the loss of high-value assets that provide critical strike capabilities.

Reports from the Ukrainian defense outlet Defense Express indicate that these protective measures have been spotted at the Novorossiysk naval base on the Black Sea [1]. The imagery shows that Russia is employing a combination of physical barriers and partial submersion to shield its vessels from aerial attacks [2].

These defenses are specifically being applied to submarines that are Kalibr-capable [1]. These vessels are central to Russia's long-range strike capacity, making them primary targets for Ukrainian deep-strike operations [4].

While the Black Sea remains a primary flashpoint, the threat appears to be driving security changes across other regions. Additional satellite images show similar anti-drone nets have been added at a Russian Pacific base located thousands of miles [3] from Ukraine [3].

The use of such fortifications is not entirely new. Earlier imagery from December 2026 showed Russia fortifying ports before a Ukrainian drone attack targeted a submarine [5]. The current expansion of these measures suggests that the threat of unmanned aerial vehicles has become a permanent operational concern for the Russian Navy.

Russia has not commented on the specific installations. However, the deployment of nets and cages reflects a reactive approach to the evolving nature of maritime warfare, where low-cost drones can threaten multi-million dollar warships [2].

Russia is installing anti-drone nets and cages to protect its submarines.

The installation of physical barriers at both Black Sea and Pacific bases indicates that Russia views Ukrainian drone technology as a systemic threat rather than a localized one. By protecting Kalibr-capable submarines, Moscow is attempting to secure its cruise missile launch platforms, which are essential for projecting power far beyond the immediate conflict zone.