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The Great Belt (, ) is a strait between the major islands of Zealand ( Sjælland) and Funen ( Fyn) in Denmark. It is one of the three Danish straits.
Effectively dividing Denmark in two, the Belt was served by the Great Belt ferries from the late 19th century until the islands were connected by the Great Belt Fixed Link in 1997–98.
The Great Belt is long and wide. It flows around two major islands: Samsø in the north and Langeland to the south. At Sprogø the Great Belt divides into the East Channel and the West Channel. Both are traversed by the Great Belt Fixed Link, but a tunnel also runs under the East Channel.
The Great Belt originated as Dana River that was eroded into existence 9000–8900 years ago when post-glacial rebound made the Ancylus Lake that occupied the Baltic depression lose its outlets around Gothenburg tipping over in the south. The forming of the Dana River is thought to have caused a dramatic erosion of sediments, and forests along its way. This led initially to a relatively rapid fall in the lake level over hundreds of years to then continue falling at a lower pace. Rising sea levels allowed the sea to break through the Dana River forming the Great Belt as a proper seaway. In the processes the Ancylus Lake became the Littorina Sea as salt water entered the Baltic depression.
In the reign of king Eric of Pomerania the Danish government began to receive a large part of its income from the Sound Dues, a toll on international merchant ships passing through the Øresund. Non-Danish vessels were restricted to the Øresund channel. Merchants paid the tax under threat of having their vessels sunk or confiscated.
During the middle of the 19th century, this practice became a diplomatic liability and the Danish government agreed to terminate it, achieving an international financial compensation in return. Danish waterways were consequently opened to foreign shipping. The eastern half of the Great Belt is an international waterway, legally based on the 1857 Copenhagen Convention. The western half of the Great Belt (between Funen and Sprogø) and all other parts of the Danish straits are Danish territorial waters and subject to Danish jurisdiction.
In 1991, Finland instituted proceedings before the International Court of Justice against Denmark, which was planning to build a fixed traffic connection over the Great Belt (later Great Belt Fixed Link), including a bridge that Finland alleged would prevent the passage of certain ships to and from Finland: Finnish-built mobile offshore drilling units would be unable to pass beneath the bridge. The case was discontinued in 1992, before the Court had to rule on the merits, because Finland and Denmark reached a negotiated settlement. The two countries negotiated a financial compensation of 90 million , and Finland withdrew the lawsuit.
On 4 April 2024, the Danish Maritime Authority ordered the closure of an area of the strait south-west of Korsør to shipping and aviation after a missile launcher aboard malfunctioned during a naval exercise.
Biology
The Great Belt is home to some popular fish: flatfish, sea trout, Atlantic cod, Atlantic mackerel and garfish, which are fished avidly for sport and for sale. A large and rising population of lives in the Belts.Miljø- og Fødevareministeriet (19 June 2013): Marsvin trives i de indre danske farvande. Retrieved 21 October 2016.
International waterway
The Great Belt was historically navigable to ocean-going vessels. It still is used, despite a few collisions and near collisions with the Great Belt Bridge. The Danish navy monitors maritime traffic in the waters around the Great Belt.
See also
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