Kattegat, is a maritime space comprising several straits in the south and a vast bay in the north, extending between Denmark and Sweden, more precisely between the Danish peninsula of Jutland and the Swedish province of Halland.
Kattegat connects to the north with the Skagerrak, a sea passage communicating with the North Sea. To the south, it includes several straits connecting to the Baltic Sea: the Øresund to the southeast, the Great Belt (Storebælt) and the Little Belt (Lillebælt) to the southwest.
Kattegat extends along a north/south axis of more than 340 km in length, from its northern limit (see below) to the southern outlet of the Great Belt (Kappelkirke, Lolland Island). It has an area of 32,000 km2. Its average depth is 23 m.
The main ports of Kattegat are :
The name Kattegat comes from Dutch language and means "channel", it was given to the strait because of its narrowness and the shoals that make maritime navigation difficult.