St. Brieuc Offshore Windfarm

A world first project – simultaneous drilling of jacket pin piles

Operating from the OIV Aeolus, we installed a total of 190 piles for the St. Brieuc Offshore Windfarm off the coast of Britanny, France. The 62 WTG’s are founded on 3-legged jackets for which we deployed simultaneously three Dive Drills and grouting units respectively, making the operation very time-efficient. For the OSS, based on four pin piles, we drilled 2 x 2 sockets to allow the usage of the 3-legged Subsea Drilling Template. Our fully cased method removed the risk of collapsing boreholes and through continous innovation we have improved our installation method further to eliminate other related risks. The highlights of this project: The wind farm is one of the first offshore wind farms in France and the first worldwide project, using drilled and grouted pin piles for jacket installation. 

Facts about the project
Location :

Saint-Brieuc, France

Project name :

St. Brieuc Offshore Windfarm

Period :

2021 to 2023

Foundation type :

Jacket Foundation

Specifics :

190 piles, 62 turbines, 1 OSS

Capacity :

496 MW

Soil hardness :

> 180 MPa

Water depth :

> 38 m

Drilling depth :

> 45 m

In the world's oceans

Offshore foundation in Saint-Brieuc of Bauer Offshore Technologies
Subsea drilling in Saint-Brieuc of Bauer Offshore Technologies
Dive Drills for offshore foundation in Saint-Brieuc of Bauer Offshore Technologies

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BAUER Offshore Technologies GmbH
Head office
bauer-offshore-technologies@bauer.de