Russian Trawlers Linger Over UK–US Cables in Hundreds of Suspicious Moves, Data Show
Russian fishing vessels have repeatedly lingered over and tracked the routes of undersea communication cables linking Britain, Europe and the US in more than 500 suspicious maneuvers over four and a half years, raising fears in London that Moscow is quietly mapping critical seabed infrastructure.
The seabed cables that carry Britain’s phone calls, financial data and internet traffic are facing persistent scrutiny from an unexpected source: Russian trawlers that appear to follow cable routes instead of fish.
Investigative work cited by The Telegraph found more than 500 suspicious maneuvers by Russian fishing vessels over a four‑and‑a‑half‑year period. Journalists examined ship‑tracking data from Global Fishing Watch and identified 17 trawlers that repeatedly slowed down, changed course or lingered along the paths of key undersea cables linking the UK with Europe and the United States.
These vessels are suspected of conducting reconnaissance on the cable network rather than preparing attacks. British officials, however, are reported to fear that the behavior could give Moscow precise information on the locations and layout of the lines, making it far easier to damage or cut them in a crisis.
The concerns fit into wider anxiety in London about the security of critical infrastructure at sea. The cables in question carry most transatlantic data traffic, underpinning everything from financial trades to government communications. Officials worry that methodical mapping of their routes by Russian‑flagged ships could help planners identify the most vulnerable segments.
The UK has already started investing in ships designed to monitor and protect seabed assets, but activity by civilian‑flagged trawlers presents an awkward challenge. Each individual maneuver can be portrayed as routine fishing. Viewed together over years, the tracks form a pattern that British officials fear may support Russian military or intelligence planning.
Britain has not publicly accused Russia of sabotaging cables, and there is no confirmation that any were damaged as a result of these specific vessel movements. The emerging picture does, however, push undersea infrastructure higher up the security agenda in London.
Signals to watch now include whether the UK issues formal diplomatic protests, steps up naval patrols focused on cable corridors, or works with allies on new monitoring rules for fishing vessels operating near vital seabed infrastructure.
Sources
- OSINT