Acteon’s Rocksteady Tension Tool (RSTT) has been selected by the InnovateUK iX programme, which supports the transfer of research into practical applications in the UK energy sector. Under this initiative, Acteon will work with the Offshore Renewable Energy (ORE) Catapult and floating offshore wind developer Flotation Energy to develop the RSTT to a higher level of technical and commercial readiness.
The RSTT is a reusable in-line winch and connection system designed to enable mid-line hook-up of mooring lines at final tension. It aims to improve the connection and disconnection processes between floating offshore wind turbines and their mooring systems.
The technology is intended to reduce capital and installation costs by removing the need for fairleads, tensioners and chains. It is designed to lower vessel size requirements and reduce rigging operations using a reusable subsea winch system. The RSTT operates in tandem with Acteon’s Rocksteady connector, a subsea quick connector that can release under load and has been tested to 1,000 tonnes.
The system has completed concept feasibility studies, including sizing calculations and static installation analysis. The InnovateUK iX programme will now support further development, including small- and large-scale testing.
