Calling for entries from companies and consortia interested in undertaking a study to establish safe, efficient, and cost-effective procedures for the connection and disconnection of moorings and cables, including necessary electrical testing, while minimising risks to personnel and equipment, and defining the required marine spread.

Major component replacement (MCR) is necessary throughout the lifetimes of turbines. While jack-up interventions are standard for bottom-fixed structures, they are not feasible for floating wind due to water depth constraints. The current O&M strategy for MCR is to tow the structures to port, which requires disconnecting mooring lines and inter-array cables. This process is expected to occur twice during the turbine’s lifetime. A clear procedure and execution plan are crucial to ensure the process is safe and efficient.

The main objectives of this work are to:

• Develop clear and executable full connection and disconnection of moorings and cable procedures to ensure safety and efficiency, including post-installation/post-reconnection electrical testing.
• Ensure that the procedures minimise risks to personnel and equipment.
• Define the necessary vessels, equipment, and personnel for the operation.
• Analyse the cost efficiency of the technologies.

The deadline for clarification questions is 2 April 2025.

The closing date to receive tender submissions is 23 April 2025.

All clarification questions and tender submissions should be sent electronically, by their respective deadlines to karolina.zieba@carbontrust.com, with floatingwind@carbontrust.com in copy.