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Timeline of suspected underwater sabotage at Baltic Sea

After a series of power outages, telecom links and gas pipelines since Russia invaded Ukraine 2022, the Baltic Sea region has been on high alert. The NATO military alliance increased its presence by adding aircraft, frigates and naval drones.

The police have determined that some incidents were caused through sabotage, while others were accidents or are still under investigation.

DECEMBER: FINLAND - ESTONIA TELECOM CANAL

Finnish police on December 31,

seized

A cargo vessel suspected of sabotaging a undersea cable that runs from Helsinki through the Gulf of Finland to?Estonia was stopped on its way from Russia.

Police said that the Fitburg vessel was caught dragging an anchor in the water and directed to Finnish territorial waters.

Investigators reported that the 14 crew members of the ship were from Russia and Georgia and two had been arrested, while two other were banned from travelling.

An investigation is ongoing

JANUARY - FEBRUARY 2025 - SWEDEN - LATVIA AND FINLAND - GERMANY TELECOM CABLING

A fibre-optic cable undersea connecting Latvia with the Swedish island Gotland failed on January 26. This prompted an investigation by NATO, police and other agencies.

Sweden seized the Maltese flagged bulk vessel Vezhen and boarded it on suspicion of gross sabotage.

The Bulgarian shipping company 'Navigation Maritime Bulgare' said that Vezhen’s anchor may have hit the cable in high winds, but denied any sabotage.

Later, a Swedish prosecutor ruled that the breach was accidental and released vessel.

In the month that followed, the Finnish telecom operator Cinia reported it had detected issues on its C Lion1 link between Finland and Germany. However, they concluded the damage could have been caused as early as the 26th of January, the day after the Gotland incident.

DECEMBER 2024 :?POWER CABLES AND INTERNET CABES

On December 25, four telephone lines and the Estlink 2 underwater power cable, which connects Finland to Estonia, were cut.

Finland has seized the Cook Islands Eagle S tanker, on suspicion that it was responsible for the damage caused by its anchor dragging. The ship is also believed to be part of an "shadow fleet", which circumvents sanctions against Russian oil.

The Kremlin stated that the seizure of the ship was not a major concern for it.

Later, the police in Finland recovered an anchor that they believed belonged to the ship.

A?Finnish Court dismissed an Eagle S case in October 2025. The court ruled that prosecutors had failed to prove intention and that the flag state of the ship or the home country of the crew must pursue any negligence.

The vessel was released after no charges were filed against Caravella LLC, a United Arab Emirates-based company.

BALTIC TELECOM CABLES: NOVEMBER 20, 2024

On November 17 and 18 two undersea fiber-optic communication cables, located at a distance of more than 200 km (about 100 nautical miles) in the Baltic Sea, were cut. This raised suspicions about sabotage.

The investigators focused on the Chinese bulk carrier Yi Peng 3. An analysis of MarineTraffic showed that the coordinates of the ship matched the time and location of the breaches.

After a diplomatic standoff lasting a whole month, China finally allowed investigators and representatives from Germany, Sweden, Finland, and Denmark to board the Yi Peng 3 on December 21, along with Chinese officials.

The Accident Investigation Authority of Sweden said that a Swedish investigation found no conclusive proof to suggest the ship intentionally dragged its cable to damage it.

BALTICCONNECTOR - GAS PIPE AND CABLES OCTOBER 20, 2023

The Balticconnector subsea pipeline that connects Finland and Estonia was cut by the Chinese container ship NewNew Polar Bear, according to Finnish investigators, on October 8, 2023.

The Estonian police suspected that the ship had also damaged telecoms cables linking Estonia with Finland and Sweden between October 8-9, before striking the gas pipeline while on its way to St Petersburg in Russia.

According to a Hong Kong charging document seen by us, the ship's captain was charged with causing "criminal damages" to cables and pipelines in Hong Kong during a hearing held last year.

SEPTEMBER: NORD STREAM?BLASTS

In September 2022, explosions damaged Nord Stream 1 & Nord Stream 2 which were built by Gazprom across the Baltic Sea to supply natural gas to Germany.

Western officials have suggested that Russia has blown up its own gas pipelines. This interpretation is rejected by Moscow, which blames the United States of America, Britain, and Ukraine for these explosions. These blasts have largely cut off Russian gas from the European Market.

These countries deny involvement.

In November 2025 the top court of Italy will be in place

Approve the transfer

A Ukrainian man's journey to Germany

Suspected of Coordinating

The sabotage.

Last year, a Polish court ruled that German prosecutors could not have a Ukrainian diving trainer. Reporting by Anne Kauranen, Essi Lahto, Nerijus Adomiaitis, Terje Solsvik, Johan Ahlander, Stine Jacobsen, Stine Ahlander, Johan Ahlander, Stine Jakobsen, Andrius Sytas, Anna Ringstrom, Simon Johnson, and Agnieszka Oleniska in Helsinki; Editing by Alex Richardson David Evans Mark Heinrich

(source: Reuters)