Kattegat 2

Overview

Kattegat 2 is a short submarine cable system spanning 75 kilometres across the Kattegat strait between Denmark and Sweden. Operated entirely by TDC Group, it provides a direct subsea link between the two countries, supporting connectivity in this segment of the southern Scandinavian corridor.

Route and Landings

In Denmark, the cable lands at three points: Lyngsa, Osterby, and Vestero. These landing stations distribute the cable's connectivity across the Danish side of the Kattegat.

In Sweden, the cable has a single landing point at Skalvik, completing the cross-strait connection.

Ownership and Operators

Kattegat 2 is owned and operated solely by TDC Group, one of Denmark's principal telecommunications providers. As the sole owner, TDC Group bears full responsibility for the cable's operation and maintenance.

Status and Timeline

The cable entered service in 2001 and has been operational for over two decades, providing continuity of subsea connectivity between Denmark and Sweden across the Kattegat.

Regional Context

The Denmark–Sweden corridor is served by several submarine cable systems of varying scale. Among them, Havfrue/AEC-2 (RFS 2020) is a far longer trans-Atlantic system with a Danish landing, while Havhingsten/North Sea Connect (RFS 2022) and Aurora (RFS 2024) represent more recent additions to regional connectivity. STO-HEL-One (RFS 2008) and BCS North – Phase 1 (RFS 1998) are other established systems in the broader Swedish corridor. N0r5ke Viking 2, with an expected RFS of 2028, is still forthcoming. At 75 kilometres, Kattegat 2 is considerably shorter than these peers, reflecting its focused intra-Kattegat function rather than long-haul ambition.

Measured performance over the past 60 days across 104 ping tests shows an average round-trip latency of 16.5 ms, with a best recorded result of 10.0 ms — consistent with the cable's short physical span.

Strategic Role

With three landing points in Denmark and one in Sweden, Kattegat 2 offers multi-point connectivity across a narrow but geographically meaningful stretch of water. Its configuration, with multiple Danish landings feeding a single Swedish terminus at Skalvik, supports distributed access on the Danish side while consolidating traffic at the Swedish landing. The cable's 75-kilometre length and low latency figures reflect a design suited to direct, short-range cross-strait communication between the two countries.