Tyra, Denmark

How the Internet Reaches Tyra, Denmark

Tyra is a submarine cable landing point in Denmark, a country positioned at the southern tip of the Scandinavian Peninsula, bordered by the North Sea and the Baltic Sea. Denmark's coastal geography has made it a natural host for submarine cable infrastructure connecting Scandinavia to the broader European network. International internet traffic reaching Tyra arrives through a single submarine cable that terminates here as one of several landing points along its route within Danish waters.

Tyra sits at the end of a domestic cable corridor rather than an international transoceanic route. The single cable serving this landing point — CANTAT-3 — connects Tyra to other Danish landing points, placing it within a regionally focused segment of submarine infrastructure rather than a direct intercontinental link to foreign countries.

The Cable Serving Tyra

The CANTAT-3 cable, 270 km in length and ready for service in 1994, is the sole submarine cable landing at Tyra. Its other landing points are all located within Denmark: Blaabjerg, South Arne, and Valdemar. This makes CANTAT-3 an entirely intra-Danish cable at the Tyra segment, linking this landing point to three other points along the Danish coast rather than connecting Denmark to any foreign nation. Traffic on this cable travels between Danish termini along what is a relatively short, 270 km route.

Regional Context

Denmark hosts 23 submarine cables across 30 landing points, with an average cable length of 370 km and the first cable in service since 1989. Tyra, served by only one cable, is among the smaller and more lightly connected of Denmark's landing points. Nearby landing points with broader connectivity include Blaabjerg (2 cables), which also appears on the CANTAT-3 route, as well as Gedser (3 cables), Brondby (2 cables), Laeso (2 cables), and Lyngsa (2 cables) — each serving a greater number of cable connections than Tyra.

What This Means for Connectivity

Because Tyra is served by a single submarine cable, and because that cable connects exclusively to other Danish landing points, all submarine traffic through Tyra flows within Denmark rather than reaching foreign destinations directly. An outage affecting CANTAT-3 would cut Tyra's submarine cable link entirely, with no alternative cable route available at this landing point. The traffic carried here is intra-national in character, linking Tyra to Blaabjerg, South Arne, and Valdemar.

Understanding Tyra's position within Denmark's 30-point submarine cable network illustrates how a country's cable infrastructure is not uniformly distributed — some landing points serve as multi-cable international hubs, while others like Tyra function as single-cable domestic nodes within a wider national grid.