The Preliminary Ground Investigation Reports and the Geotechnical Report include the results of the geophysical and
geotechnical investigations. These investigations are conducted both by indirect methods such as sonar, seismic and echo
sounding as well as direct methods such as drilling, penetration testing and pile driving tests. Soil samples will be further
analysed in laboratory tests. For the preliminary ground investigation, at least 10% of the planned turbine locations must be
investigated via penetration testing and borehole sampling to provide a representative portrait of in-situ ground conditions.
The preliminary design document for the sub-structure indicates the selected design of the sub-structure, including its dimensions
and the boundary conditions used for dimensioning. SGS experts performed a verifi cation of all relevant documents, including
simplifi ed calculations and plausibility checks of the data provided. Findings, doubts and deviations were summarised in our status
reports, which document the ongoing verifi cation process at SGS. The resulting issues were then discussed with the relevant
experts from our client or their subcontractors who prepared the documentation. Upon submission and fi nal check of the revised
documentation, SGS prepared the corresponding Certifi cation Report for Phase I, to be submitted to the BSH by the client. Lastly