Kotka, Finland

Kotka, Finland: Submarine Cable Landing Point

Kotka is a town situated on the southeastern coast of Finland, at the mouth of the Kymi River. Its coastal position on the Gulf of Finland has made it a landing point for submarine cables, with two systems coming ashore here. These cables connect Kotka into both regional Baltic Sea routes and cross-border links with neighboring countries.

The two cables landing at Kotka serve distinct corridors. One connects Finland with Russia, establishing a direct link across the eastern end of the Gulf of Finland, while the other connects Finland with Sweden, spanning the Baltic Sea. Together, they position Kotka as a node bridging eastern and western connectivity within the broader Baltic regional network.

Cables Landing at Kotka

BCS North - Phase 2 is a submarine cable with a length of 280 km, with a ready-for-service year of 2000. The cable connects Finland and Russia, running across the Gulf of Finland. Kotka serves as the Finnish landing point for this system, providing a direct submarine link between Finland and its eastern neighbor.

Eastern Light Sweden-Finland I has a ready-for-service year of 2019. The cable connects Finland and Sweden across the Baltic Sea. Landing at Kotka on the Finnish side, this system extends the town's connectivity westward toward Sweden, complementing the eastward orientation of the BCS North - Phase 2 cable.

Regional Context

Within Finland's submarine cable infrastructure — which spans 15 cables across 11 landing points — Kotka ranks in the upper portion of landing points by cable count, hosting 2 cables and placing it alongside Espoo and Lokalahti as a two-cable landing point. It trails the country's primary hub at Helsinki, which hosts 10 cables, and Hanko, which hosts 4. Kotka occupies a modest but defined position on the southeastern coast, distinct from the cluster of landing points found further west along Finland's coastline.

Network Role

Kotka functions as a two-cable landing point serving a geographically specific corridor at the eastern end of the Gulf of Finland. The BCS North - Phase 2 cable provides a submarine connection to Russia, while Eastern Light Sweden-Finland I extends a link westward to Sweden. This combination means Kotka simultaneously participates in eastward and westward Baltic connectivity, even as it remains a smaller node compared to Helsinki's dominant role in Finnish submarine cable infrastructure.

Within the regional submarine cable graph, Kotka's role is defined by the complementary directions of its two cables — one oriented toward Russia and one toward Sweden — making it a geographically focused landing point that bridges opposite ends of Finland's Baltic Sea neighborhood.