GOTHENBURG, Sweden — DNV has issued approval in principle (AiP) for Bassoe Technology’s 17-MW D-Floater floating wind foundation, which is designed to withstand extreme 50-year typhoon conditions in the South China Sea.
The three-column semisubmersible has a Delta-shaped pontoon configuration that allows stacking of foundations inside each other.
According to the company, this facilitates transport of multiple completed foundations on a single, heavy-lift transport vessel and storage in the marshalling port.
The design provides for a tow-out draft of less than 10 m with the turbine installed and is intended to add flexibility to selection of the assembly port and to allow quayside installation of the tower and turbine closer to the offshore wind farm.
Li MingGao, vice president, CIMC Raffles and chairman of the board of Bassoe Technology, said, “At CIMC Raffles, we will have the ability to deliver more than 50 D-Floaters per year, and with planned expansion of the yard facilities, we are able to deliver more than 100 D-Floaters per year.
“With this fabrication capacity and the D-Floater’s global supply advantages, we are ready to support our clients in their future large-scale floating wind developments.”
DNV’s AiP verifies that the design is feasible for the intended application and, in principle, complies with applicable requirements in accordance with DNV rules and standards. The assessment was performed for the following class notations: ✠OI Column-stabilized Floating offshore wind turbine installation, POSMOOR, Recyclable, BIS.