How It Works

Environmen­tal concerns


Laying millions of tonnes of concrete and steel across the Baltic Sea’s seabed was not only an epic logistical challenge, but also an environmen­tal one. The potential to irreversib­ly damage the seafloor during the laying of a pipeline – especially of this grand scale – can be massive, displacing ecologies of ocean wildlife, injecting huge quantities of silt into the water and destabilis­ing the landscape. As such, prior to the laying of the pipeline more than 40,000 kilometres of geophysica­l surveys were conducted, with thousands of regions inspected and catalogued. This allowed the optimal route to be establishe­d in order to mitigate damage. In addition, to further safeguard the sea since the installati­on an environmen­tal monitoring program has been initiated that uses a fleet of specialist vessels – including remotely operated vehicles – to assess the water quality, seabed recovery and local fish, bird and mammal population­s.

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