Ailes Marines, a consortium led by Iberdrola and EOLE-RES has begun two geotechnical and geophysical feasibility campaigns on the site of the offshore wind project to be built in the bay of Saint Brieuc in France.
These campaigns will specify the dimensions and the design of the foundations, and will confirm the method of installation of the future wind farm. Ailes Marines has commissioned the company GeoSea, subsidiary of the group DEME, to carry out the two campaigns.
A geophysical campaign, which began on Aug. 26 and will last 45 days, was carried out using an echosounder from the boat IXplorer, chartered by GeoSea, and will determine the exact topography and the composition of the seabed.
A geotechnical campaign, which began on Sept. 16, and will last 35 days, was carried out using the self-elevating Goliath jack-up platform and chartered by GeoSea. It will be based on a series of bore-holes about 30 meters deep, drilled from the Goliath platform.
These two geotechnical and geophysical campaigns will specify the dimensioning and design of the future foundations of the wind turbines (jackets) and will confirm the methods for installing the future components of the wind farm, such as foundations, cables, the electrical substation and the turbines, Iberdrola says.
"These campaigns and the data collected will allow us to improve our knowledge of the seabed and the subsurface of the future site in order to develop and build a project in harmony with the characteristics of its environment," notes Emmanuel Rollin, project director for Ailes Marines.