Geotechnical surveys in progress on the Berwick Bank offshore wind farm

SSE Renewables has begun its second phase of geotechnical survey work on the Berwick Bank wind farm and export cable routing area off the east coast of Scotland.

Berwick Bank’s wind farm includes Berwick Bank’s 2.3 GW and Marr Bank’s 1.85 GW offshore wind projects.

The 4.1GW project is expected to be built in the Outer Firth of Forth, over 40km off the East Lothian coast. SSE Renewables is making final preparations to submit the project to Scottish Ministers for planning approval.

Survey work is undertaken by the Geo Marine Site Survey Specialist and will be carried out from the vessel Northern Ocean. The reconnaissance vessel will be the Artemis.

Work began this month and will take up to two months depending on weather conditions.

As part of the survey work at the main site, Geo will perform approximately 100 CPTs from the seabed to a maximum depth of 30m below the seabed. It will also perform approximately 100 co-located vibro-cores at a maximum depth of 6 m below the seabed.

The scope of work along the export cable route will include approximately 80 CPTs on the seabed and 80 co-located vibrocores at a maximum depth of 6m below the seabed.

During the campaign, the ships will deploy underwater equipment to collect cores and also assess the geology of the area.

SSE Renewables does not expect anglers to move their gear during the campaign. Instead, the survey that ships will conduct around any gear on site.

A reconnaissance/guard vessel will operate ahead of the survey vessel to ensure this can be achieved.

The first phase of survey work, which included a borehole survey, was completed in February this year.

SSE Renewables has also announced that it will reduce the overall area of ​​the Berwick Bank wind farm by approximately 20%. This is in addition to a previous reduction of 10% already made last summer.

The decision was made as part of the project’s iterative design process following stakeholder consultation, ornithological studies and an environmental assessment that is nearing completion.

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