🔥 Trending Russia's Submarines Get New Anti-Drone Defenses

Russia has recently been observed implementing various anti-drone defenses for its submarines, primarily in response to the growing threat posed by Ukrainian unmanned aerial and surface vehicles ²⁵. These defenses range from physical barriers to more advanced electronic warfare systems.

Physical Anti-Drone Defenses

The most visually prominent and widely reported anti-drone defenses are physical structures added to the submarines themselves or around their berthing areas.

Anti-Drone Cages/Nets

Russia has been fitting its submarines with improvised counter-UAS (Unmanned Aerial System) cages, often referred to as "grills" or "nets" ²⁵⁶. These structures are typically installed over the submarines' decks, particularly the rear sections, and are designed to detonate or entangle incoming drones before they can directly impact the hull ¹⁵.

• Deployment Locations: These cages have been observed on various submarine classes and at different naval bases:
• Black Sea Fleet: Kilo-class submarines at the Novorossiysk naval base have been fitted with these cages ¹⁵. This highlights concerns over Ukraine's expanding long-range drone strike capabilities ⁵.
• Baltic Sea Fleet: Diesel-electric submarines at the Kronstadt naval base near Saint Petersburg also feature these improvised defenses ².
• Pacific Fleet: Even nuclear submarines, including those carrying R-30 Bulava ballistic missiles, at the remote Rybachy base in Kamchatka, approximately 7,200 to 7,400 km from Ukraine, have been equipped with anti-drone netting ³⁴⁶. This suggests a widespread concern across Russian naval forces, far beyond the immediate conflict zone ³⁶.
• Purpose: The primary goal of these cages is to provide a standoff distance, causing drones to detonate prematurely or become ensnared, thus preventing direct damage to critical components of the submarine ¹.

Improvised Machine Gun Mounts

Some Russian submarines have also been observed with pedestal-mounted heavy machine guns, possibly NSV 12.7mm, on their aft casings behind the fin (sail) ¹⁰. These are likely intended for close-range engagement of smaller, fast-moving drone threats ¹⁰.

Electronic Warfare (EW) and Air Defense Systems

Beyond physical barriers, Russia is also deploying more sophisticated systems to counter drone threats.

Repellent-1 EW System

The Repellent-1 electronic warfare system is designed to detect and suppress drones ⁸. While not exclusively for submarines, its deployment indicates a broader strategy to counter drone threats across various military assets. It can jam drone control signals, causing them to lose communication or crash ⁸.

Zubr Air Defense System

Russia has deployed the Zubr short-range air defense system, which is specifically designed to counter drones ⁹.

• Capabilities: According to its developers, the Zubr system independently detects drones and automatically tracks them ⁹. An operator then makes the decision to engage the target ⁹.
• Deployment: As of January 2026, these systems are being deployed, indicating a focus on automated drone detection and engagement ⁹.

Broader Context and Implications

The implementation of these anti-drone defenses reflects a significant shift in Russian military strategy, acknowledging the growing effectiveness of unmanned systems in modern warfare.

• Widespread Concern: The fact that these defenses are being applied to submarines across various fleets, including those far from the Ukrainian conflict, underscores the perceived ubiquitous nature of the drone threat ³⁶.
• Adaptation: These measures demonstrate Russia's attempt to adapt to new combat realities, where even high-value assets like submarines are vulnerable to relatively inexpensive drone attacks ⁵.
• Other Naval Assets: It's not just submarines; other Russian naval vessels, such as Project 22460 Okhotnik patrol ships of the FSB Coast Guard, have also been equipped with anti-drone nets ⁷.

These developments highlight the increasing importance of counter-UAS measures in naval warfare and the ongoing technological arms race between offensive drone capabilities and defensive countermeasures.