| C-Lion1 | |
|---|---|
| | |
| Owners: Cinia Oy | |
| Landing points | |
| Total length | 1,173 kilometres (729 mi) |
| Design capacity | 120 Tbit/s |
| Currently lit capacity | 144 Tbit/s |
C-Lion1 is a submarine communications cable between Finland and Germany. The cable is owned and operated by the Finnish telecommunications and IT services company Cinia Oy. [1] It is the first direct communications cable between Finland and Central Europe; previous connections have been through Sweden and Denmark.
The cable was damaged in November 2024, taking the cable offline between November 18 and November 28. [2] Some officials suspect the damaging was an act of sabotage. [3] The connection was offline again between December 25, 2024 and January 6, 2025 in connection with the 2024 Estlink 2 incident. [4] [5]
The cable is 1,173 kilometres (729 mi) long and has eight fiber pairs with a design capacity of 120 Tbit/s and a maximum capacity of 144 Tbit/s. [6] [7] [8]
Alcatel Submarine Networks commenced the installation of the cable in October 2015, completing the process in January 2016. The cable entered commercial operation in May 2016.
In October 2017, a network switch was installed to the Finnish port city of Hanko. [9]
A fault was detected in the cable on 18 November 2024, [10] after which the services provided over the cable went down. According to the Finnish operating company 'Cinia Oy', the cable service was interrupted by a subsea physical force . [3] The fault was discovered off the coast of the Swedish island of Öland. [11]
German Federal Defense Minister Boris Pistorius called the incident an act of sabotage. [10] As of 19 November 2024, the cause of the fault was being investigated. [12] [11]
The Lithuanian Naval Force announced increased surveillance of its waters in response to the damage and would discuss further measures with Lithuania's allies. [10]
On 29 November 2024, the operator Cinia Oy announced that the cable had been completely repaired. [13]
The cable was went offline again on December 25, 2024. The probable cause of the fault is considered to be a cable cut in the Gulf of Finland. [4] The damage was repaired on January 6, 2025. Cinia Oy is demanding the seizure of the vessel Eagle S linked with the incident to secure its claims for compensation. [5]
C-Lion1 has landing points in: