Feasibility of anchor types for floating wind: Geotechnical drivers

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A successful floating wind project relies on anchors that meet the project geo-performance criteria while maximizing project benefit, such as optimizing cost and reducing project risk. Achieving this requires selection of an anchor technology that aligns the geotechnical drivers for anchor performance with the specific conditions and constraints of a project. This paper explores the factors influencing the geotechnical performance of commonly used anchor types to help inform optimal anchor selection. Firstly, this paper identifies geo-performance criteria for anchors, which commonly relate to anchor installation and in-place performance/capacity. An examination of geotechnical drivers that can influence an anchors ability to meet these criteria is presented. These geotechnical drivers include ground conditions, mooring line loading conditions and other project factors relevant to the anchor selection and geotechnical design. The performance of commonly used anchor types is compared over the different geotechnical drivers. The comparison illustrates that significant differences in performance can occur between different anchor types. Finally, site characterization requirements to provide the inputs necessary to support anchor selection are discussed.

5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)

13 - Developmental foundation and anchoring concepts: hybrid foundations, ring anchors, helical piles, torpedo, shared anchoring