Royal Navy Tracks Russian Submarine 'Krasnodar' Through English Channel

Three-Day Surveillance Operation

The British Royal Navy recently concluded a three-day operation to track a Russian Kilo-class submarine, the Krasnodar (B-265), and its accompanying tug, the Altay, as they navigated through the English Channel. The surveillance, which commenced on December 11, 2025, involved continuous monitoring by British forces and NATO allies.

The Russian vessels were observed moving westward from the North Sea, passing through the Strait of Dover, and entering the English Channel. Throughout their transit, the Krasnodar remained on the surface, despite encountering stormy weather conditions. This surface transit is often a standard protocol for non-nuclear submarines in the shallow and busy waters of the Channel, and also serves as a visible 'show of presence'.

Royal Navy's Response and Assets

The Royal Navy's response involved the deployment of the Royal Fleet Auxiliary (RFA) tanker RFA Tidesurge, which served as a mobile aviation platform. A specialist Merlin Mk2 helicopter from the 814 Naval Air Squadron was embarked on the Tidesurge, ready to conduct anti-submarine warfare operations if the Krasnodar had submerged. The Merlin Mk2 is equipped with advanced capabilities for submarine hunting, including dipping sonar and sonobuoys.

Upon reaching waters near Ushant, off the northwest coast of France, the monitoring responsibilities for the Russian vessels were successfully handed over to a NATO ally, ensuring continuous surveillance.

Increased Russian Activity and Strategic Concerns

This operation highlights a notable increase in Russian naval activity in proximity to the United Kingdom. According to Royal Navy statements, there has been a 30 percent rise in Russian vessels transiting UK waters over the past two years. Royal Navy Captain James Allen, Commanding Officer of RFA Tidesurge, remarked, 'There is nothing like a Russian submarine to focus the mind for any mariner.' Lieutenant Commander David Emery of 814 Naval Air Squadron's Atlantic Flight emphasized that 'Maintaining an overt presence and continued overwatch of Russian vessels in UK waters is vital for national security.'

The UK's Defence Secretary, John Healey, recently announced a multi-million dollar program aimed at enhancing the Royal Navy's capabilities to counter 'underwater threats'. This comes amidst concerns over incidents such as a Russian spy ship reportedly directing lasers at Royal Air Force pilots and increased Russian activity near critical undersea cables. NATO Secretary-General Mark Rutte has also issued a stark warning, stating, 'We are Russia's next target,' urging European nations to prepare for potential conflict.

Conclusion

The tracking of the Russian submarine Krasnodar through the English Channel serves as a clear demonstration of the Royal Navy's vigilance and its commitment, alongside NATO allies, to safeguarding maritime security. The ongoing increase in Russian naval presence in sensitive European waters continues to be a significant focus for defense and security forces in the region. The Kilo-class submarine, known for its stealth capabilities and dubbed 'Black Hole' by some in the US Navy, represents a persistent challenge in maritime surveillance.