Sea fastening design for monopile transport
Van OordVan Oord Off shore Wind has been contracted to transport and install 76 wind turbine generator (WTG) monopiles and 2 off shore substation (OSS) monopiles for the Balti c Power Off shore Wind Farm, located in the Polish Exclusive Economic Zone of the Balti c Sea, approximately 22 kilometres from the Polish coast.
The monopiles, varying in length from 70 to 90 metres, in diameter from 8.6 to 9.1 metres, and weighing up to 1,800 tonnes, will be transported from the fabrication yard in Nordenham, Germany, to the marshalling harbour in Ronne, Denmark.
CLIENT
Van Oord is an international marine contractor specializing in dredging, off shore wind, oil and gas infrastructure, and marine construction projects. With a strong focus on sustainability and operational excellence, Van Oord delivers solutions that contribute to the global energy transition and the development of critical maritime infrastructure.
SCOPE
Designing a sustainable and reusable sea fastening system for the transport of varying monopile sizes.
ADDED-VALUE MULTI.ENGINEERING
Thanks to this integrated approach, Van Oord can rely on a robust and validated sea fastening solution that enhances efficiency, safety, and cost-effectiveness during monopile transport for the Balti c Power Off shore Wind Farm.
MULTI.engineering was tasked with developing an innovative and operationally efficient sea fastening concept, followed by basic and detailed engineering
FACTS & FIGURES
- 76 WT
- 2 OSS monopiles
- Length: 70 - 90 m
- Diameter: 8.6 - 9.1 m
- Mass: up to 1,800 t
SERVICES PROVIDED
- MP integrity calculations
- Motion response analysis and Stability calculations
- Vessel strength assessment and calculations
- Structural calculations incl. FEA of the MP seafastening and integration
- Full comprehensive design report
- Full package of basic construction plans and detail fabrication drawings
- Design risk assessment and operations manual
- Cost analysis
- Design approval
- Liaison with fabrication party
SPECIFICATIONS AND CHALLENGES
MULTI.engineering was tasked with developing an innovative and operationally efficient sea fastening concept, followed by basic and detailed engineering. The challenge lay in designing a sustainable and reusable fastening system that could safely accommodate the wide range of monopile dimensions while ensuring structural integrity throughout transport operations
