Russian Kilo-class submarine detected off Brittany, France, October 12

A Russian Kilo-class submarine, identified as likely B-261 Novorossiysk, was detected surfaced off the coast of Brittany, France, on October 12, 2025. A French Navy frigate is currently tracking the vessel. NATO is also monitoring the situation closely.

This incident follows a pattern of increased naval activity in the region, raising concerns among European defense officials. The Kilo-class submarines are known for their stealth capabilities and have been a part of Russia"s naval fleet for several decades.

As previously reported, tensions in the region have been heightened due to various geopolitical factors, leading to increased vigilance from NATO and allied forces. The monitoring of the submarine"s movements is part of ongoing efforts to ensure maritime security.

Further updates on the situation are expected as the French Navy and NATO continue their surveillance operations.