work to start on dredging for the construction of Lynetteholm

At the end of 2021, the Danish Parliament passed a Construction Act for Lynetteholm and work on the new, man-made island across the entrance to the harbour will start later this month with extensive dredging that will remove sludge across the sea bed to form a stable base for the next stage when landfill will be brought in to create the island.

That sediment - estimated to be around 2.5 million tonnes across the sea bed - is described as "slightly polluted" so, presumably, that means that there is contamination from the harbour, contamination from shipping entering and leaving the harbour and pollution from the old ship yards on Refshaleøen.

‘Sludge’ will be taken south by barge to be dumped in the bay off the town of Køge. The Danish word used in the local press for this is 'klapning' or clapping but I'm not sure if that is the process or the term for the sludge. A recent article talked about the 'clapping area'.

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from Langelinie looking east - out to the Sound

at the centre is Trekroner Fortet - the Three Crowns Fortress - built in the 1780s to guard the entrance to the harbour
to the far left is the massive warehouse of UNICEF out at Nordhavn and the three white buildings are the cruise ship terminal
to the right the buildings are at the north end of Refshaleøen

the new island will fill the whole horizon with just a channel in front of the cruise ship terminals for boats entering and leaving the inner harbour

 

Copenhagen, Amager and Saltholmen in the middle of the 19th century showing shallow marshes and mud flats in the bay south of the harbour and the map has the depth of the main channels in the Sound