Baltic Sea Security Timeline 2024-2025
Hybrid Warfare Incidents and Critical Infrastructure Threats
Ongoing GNSS Jamming Over Baltic
2022-2024
84 hours of GPS/GLONASS/Galileo/BeiDou interference detected in 6-month period; 29 hours in October 2024 alone
Source: Gdynia Maritime University, Poland
Ship-Based GNSS Jamming Confirmed
October 14, 2024
Mobile ship-based jammers cause up to 7-hour disruptions affecting Polish, Swedish, Lithuanian EEZs
Source: Spire Maritime Data
BCS East-West & C-Lion1 Cable Disruptions
November 17-18, 2024
Two submarine cables cut simultaneously; Yi Peng 3 Chinese cargo ship under investigation
Source: Multiple European governments
Dramatic Increase in Jamming Cases
January 2025
Poland: 2,732 cases; Lithuania: 1,185 cases; Latvia: 1,288 cases; Estonia: 1,085 cases
Source: Council of the European Union
C-Lion1 Cable Damage - Sabotage Suspected
February 21, 2025
Finland-Germany cable damaged east of Gotland; Sweden and Finland launch sabotage investigation
Source: Swedish Police, Cinia Oy
Russian Drone Incursion into Poland
September 9-10, 2025
19-23 Russian drones enter Polish airspace; 4+ shot down by NATO forces; Poland invokes Article 4
Source: Polish government, NATO
Timeline of Baltic Sea Hybrid Warfare Incidents (2024-2025): From persistent GNSS jamming originating from Kaliningrad Oblast affecting Polish, Swedish, and Lithuanian maritime and aviation corridors, to the November 2024 simultaneous severing of the BCS East-West and C-Lion1 submarine cables, the February 2025 suspected sabotage of the C-Lion1 cable east of Gotland, and the unprecedented September 2025 Russian drone incursion into Polish airspace that triggered NATO's Article 4 and resulted in the first NATO shootdown of Russian assets since Ukraine's invasion. Sources: Gdynia Maritime University, Spire Maritime, European governments, Swedish Police, Cinia Oy, Polish government, NATO.