Nothamnsbacken, Sweden

How the Internet Reaches Nothamnsbacken

Nothamnsbacken is a landing point on the Swedish coast, one of twenty submarine cable landing points distributed across Sweden. Sweden's position along the Baltic Sea places it at the crossroads of Nordic and Baltic internet connectivity, and Nothamnsbacken participates in that regional network through its direct submarine cable link eastward across the Baltic to Finland. International internet traffic arriving at Nothamnsbacken does so exclusively through this single cable connection, making Finland the immediate transit partner for all external traffic passing through this terminus.

Unlike larger Swedish landing points that serve as nodes on multi-cable corridors, Nothamnsbacken functions as a single-cable terminus. All traffic entering or leaving this point travels the same physical route, a 560-kilometre submarine cable spanning the Baltic Sea between Sweden and Finland.

The Cable Serving Nothamnsbacken

The STO-HEL-One cable is a 560-kilometre system that entered service in 2008. It connects Nothamnsbacken in Sweden to three landing points in Finland: Hamnäs, Lokalahti, and Skatörarna. This multi-point Finnish connectivity means the cable links into Finland's coastal cable infrastructure at several locations rather than a single Finnish terminus, distributing traffic across the Finnish network from this single Swedish landing point.

Regional Context

Sweden hosts 17 submarine cables across 20 landing points, with the first cable in service dating to 1994 and an average cable length of 335 kilometres — reflecting the predominantly regional, Baltic-focused nature of Swedish submarine infrastructure. Nothamnsbacken is among the more modestly connected of these landing points. Nearby peers within Sweden include Farosund, which serves three cables, and both Klagshamn and Stavsnas, which each land two cables. Stockholm similarly hosts two cables. Nothamnsbacken, alongside Borbby Strandbad, represents the single-cable end of Sweden's landing point spectrum.

What This Means for Connectivity

Because Nothamnsbacken is served by a single submarine cable, all international traffic from this landing point flows through STO-HEL-One. An outage on this cable would sever the location's entire submarine connection. The destinations reachable through this route are the Finnish landing points at Hamnäs, Lokalahti, and Skatörarna, from which traffic connects onward into Finland's broader network and the wider internet beyond.

This single-cable, Sweden-to-Finland configuration positions Nothamnsbacken as a regionally oriented terminus rather than a hub for intercontinental traffic. Understanding this helps illustrate how Baltic Sea internet topology is built from numerous short, point-to-point cable segments rather than a small number of large-capacity international links — a pattern that reflects both the geography of the region and the distributed nature of Nordic network interconnection.