Svalbard–Mainland subsea fiber: one of two cables failed

Early on the morning of 07 January 2022, one of the two subsea fiber-optic cables of the Svalbard Undersea Cable System stopped working. The system consists of two separate cables running between Longyearbyen on Svalbard and the Norwegian mainland, and the loss of one left the link operating on a single cable with no redundancy. According to The Barents Observer, the operator Space Norway located the disruption somewhere between roughly 130 and 230 kilometers from Longyearbyen, in waters west of Svalbard where the seabed drops from about 300 meters toward 2,700 meters.

The link is part of Norway's space and communications infrastructure. As High North News reported, the cables support the Svalbard Satellite Station (SvalSat), a large ground station whose antennas download data from polar-orbiting satellites. Communication to and from Svalbard continued to run as normal on the surviving cable, though officials acknowledged the loss of backup capacity. Space Norway initially declined to speculate on the cause until more was known.

The cause was investigated by Norwegian police. The Barents Observer reported that preliminary inquiries strengthened a hypothesis of human impact and that natural causes were considered unlikely. Suspicion centered on possible vessel activity, with seabed tracks consistent with a trawl door noted in the area. No suspect was charged, no link between any specific vessel and the damage was proven, and the case was later closed for lack of evidence.

Attribution remains unknown. The cable's strategic role in serving SvalSat, combined with broader Arctic tensions, led some commentators to raise the prospect of deliberate interference. Investigators, however, pointed toward external physical force and possible fishing-vessel activity such as bottom trawling, and they did not establish sabotage. The damage was attributed to outside influence rather than equipment failure, but no intent was demonstrated and the police case was dropped. The incident is best read as an unresolved disruption to critical Arctic infrastructure, with sabotage neither confirmed nor ruled out.