Nov 12, 2025
Odfjell Oceanwind has received DNV's Basic Design Approval for the Deepsea Star Floater.
Norwegian floating wind platform developer Odfjell Oceanwind has obtained Basic Design Approval (BDA) from DNV for its Deepsea Star semi-submersible floater design. The BDA permits the design's use with the SG 14‑236 DD 15 MW turbine from Siemens Gamesa across various offshore conditions. This approval, in line with DNV-RU-OU-0512, confirms that the Deepsea Star adheres to the DNV-ST-0119 standard concerning the strength and grade of steel, corrosion protection, stability, mooring, and marine and electrical systems, according to Odfjell Oceanwind on November 11.
Sille Grjotheim, Global Segment Director Floating Offshore Wind at DNV, stated that the BDA builds on a previous concept validation, confirming the design’s compliance with industry standards, supported by further independent analyses that enhance confidence in the review. Launched in February 2023, the Deepsea Star is a column-stabilised semi-submersible steel platform designed for wind turbines of 15 MW and greater.
Per Lund, CEO of Odfjell Oceanwind, noted that the BDA assures safety regulators, banks, insurers, developers, and suppliers of the Deepsea Star's reliability, contributing to its bankability and aiding in reducing costs for floating offshore wind's future role in energy.
In February 2024, Odfjell Oceanwind and Prodtex formed a joint venture, Windsteel Technologies, to mass-produce floating wind foundations, including Deepsea Star. In March 2024, NOK 2 billion (approximately EUR 175 million) in state funding was allocated to the GoliatVIND demonstration project, which plans to deploy five 15 MW turbines on Deepsea Star foundations. This year, Odfjell Oceanwind announced it acquired the 80% share held by Ørsted in the 100 MW Salamander floating wind project in Scotland, which chose the Deepsea Star semi-submersible steel foundation for its wind turbines.
Sille Grjotheim, Global Segment Director Floating Offshore Wind at DNV, stated that the BDA builds on a previous concept validation, confirming the design’s compliance with industry standards, supported by further independent analyses that enhance confidence in the review. Launched in February 2023, the Deepsea Star is a column-stabilised semi-submersible steel platform designed for wind turbines of 15 MW and greater.
Per Lund, CEO of Odfjell Oceanwind, noted that the BDA assures safety regulators, banks, insurers, developers, and suppliers of the Deepsea Star's reliability, contributing to its bankability and aiding in reducing costs for floating offshore wind's future role in energy.
In February 2024, Odfjell Oceanwind and Prodtex formed a joint venture, Windsteel Technologies, to mass-produce floating wind foundations, including Deepsea Star. In March 2024, NOK 2 billion (approximately EUR 175 million) in state funding was allocated to the GoliatVIND demonstration project, which plans to deploy five 15 MW turbines on Deepsea Star foundations. This year, Odfjell Oceanwind announced it acquired the 80% share held by Ørsted in the 100 MW Salamander floating wind project in Scotland, which chose the Deepsea Star semi-submersible steel foundation for its wind turbines.