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C-Lion1 Submarine Telecommunications Cable Severed Between Finland and Germany, with Yi Peng 3 Implicated.

On 18 November 2024, the C-Lion1 submarine telecommunications cable connecting Finland and Germany was severed in the Baltic Sea, causing a complete interruption of services transmitted through the connection. Finnish telecommunications operator Cinia detected the failure at 04:04 Finnish time and subsequently identified the damaged section within Sweden’s Exclusive Economic Zone, east of the southern tip of Öland. The 1,173-kilometre cable, operational since 2016, provided a direct telecommunications connection between Finland and Central Europe, making it an important component of regional communications infrastructure. The damage occurred less than 24 hours after the BCS East-West Interlink cable between Lithuania and Sweden had been severed, prompting concerns about possible coordinated attacks against Baltic underwater infrastructure. Investigators focused on the Chinese-flagged bulk carrier Yi Peng 3, which had departed Russia’s port of Ust-Luga on 15 November and passed near both damaged cable locations around the times of the failures.

Occurrence
2024-11-18
Publication
2024-11-18
First observed
2026-10-19T10:30:14.707Z
Review status
Not assessed
Countries
DE, FI
Updated
2026-10-19T10:30:14.707Z

Attribution

Pattern-compatible

Facts

No facts

Sources

  1. Role
    discovery_lead
    Date
    2024-11-17T23:07:20Z

    On 18 November 2024, the C-Lion1 submarine telecommunications cable connecting Finland and Germany was severed in the Baltic Sea, causing a complete interruption of services transmitted through the connection. Finnish telecommunications operator Cinia detected the failure at 04:04 Finnish time and subsequently identified the damaged section within Sweden’s Exclusive Economic Zone, east of the southern tip of Öland. The 1,173-kilometre cable, operational since 2016, provided a direct telecommunications connection between Finland and Central Europe, making it an important component of regional communications infrastructure. The damage occurred less than 24 hours after the BCS East-West Interlink cable between Lithuania and Sweden had been severed, prompting concerns about possible coordinated attacks against Baltic underwater infrastructure. Investigators focused on the Chinese-flagged bulk carrier Yi Peng 3, which had departed Russia’s port of Ust-Luga on 15 November and passed near both damaged cable locations around the times of the failures.