Scope of Work
Global Maritime provided technical support to Cadeler where a comprehensive jack-up site appraisal was conducted for the Baltyk 2 and 3 Offshore Wind Farms, focusing on soil condition categorization and geohazard assessment to support operations of the Cadeler O-Class and P-Class Wind Turbine Installation Vessels (WTIV).
Detailed leg penetration assessments were performed for 100 planned wind turbine generator (WTG) locations using Global Maritime’s in-house software, GM Jugga, which is fully compliant with ISO 19905-1 standard. These assessments covered both the Cadeler O-Class and P-Class WTIVs at each individual location. Global Maritime also assisted the Client with vessel selection optimisation, based on operational risks.
Additionally, Finite Element Analyses (FEA) and leg extraction assessments were carried out for the Cadeler P-Class WTIV at four nominated locations where deep spudcan penetrations were anticipated, to evaluate risks related to leg recovery.
Challenges
Effective scope management was key to ensure Cadeler received the information they required, without significant resource expenditure.
The Baltyk 2 and 3 Offshore Wind Farm sites exhibited complex ground conditions, characterized by multi-layered soils with highly variable geotechnical properties. These conditions posed several key challenges for jack-up operations, including:
These conditions posed several key challenges for jack-up operations, including:
- Very deep leg penetrations, exceeding 20 meters at several locations
- High punch-through risk at several locations,
- Scour-related hazards, with associated scour or Punch Through scour-induced risks
Outcome – Results and Deliverables
In-depth interpretation of ground investigation data enabled a robust and detailed site appraisal, supporting the client in identifying geohazards and managing technically challenging locations across the Baltyk 2 and 3 Offshore Wind Farm sites. A comprehensive and structured summary was provided, consolidating key findings, risk factors, and recommendations for each location. This was complemented by detailed individual location analyses to ensure all site-specific aspects were addressed.
The appraisal played a critical role in facilitating more effective planning of site visits and in guiding the selection of the most suitable Wind Turbine Installation Vessel (WTIV) for each location.
