Dajin Heavy Industry announced the progress of its first DNV-certified three-legged jacket offshore structure project, specifically designed for offshore wind farms in the demanding environment of the European North Sea.
The company indicated that this is the first prototype of its kind developed in China under European standards for international clients in the offshore wind sector.
Offshore jacket was designed for 15 MW turbines
The structure was developed to support large-capacity offshore wind turbines of up to 15 MW, aligning with the global trend toward higher power and larger offshore turbines.
According to Dajin, the project incorporates DNV NV F36 grade steel, capable of achieving impact resistance down to -60°C, exceeding the conventional -40°C standards typically used in offshore applications.
The company also highlighted the implementation of an innovative double-groove design in TKY joints, considered one of the primary technical challenges in the fabrication and welding of offshore jackets.
Project meets international offshore standards
Dajin Heavy Industry noted that the entire development is executed in accordance with recognized international codes in the offshore industry, including: DNV-ST-0126, DNV-OS-B101, DNV-OS-C401, and NORSOK M501 (2022).
The company expects to complete the final assembly and the prototype acceptance process during 2026.
Offshore fabrication takes place in Tangshan
The project is being developed entirely at Dajin’s offshore fabrication facilities in Tangshan, an industrial complex officially inaugurated in December 2025.
The plant features production lines dedicated to offshore jacket fabrication and holds the following certifications: ISO 9001, ISO 45001, and ISO 14001.
According to the company, these capabilities allow for the large-scale fabrication of highly complex offshore structures with high standards of quality and operational efficiency.
Dajin seeks to strengthen global offshore presence
Peter Li, Senior Vice President of Dajin Heavy Industry, stated that the project represents a significant step in the company’s international strategy within the offshore wind energy market.
“Dajin is moving steadily toward more promising horizons,” Li noted, inviting developers and industrial partners to learn about the company’s offshore capabilities.
The initiative joins other recent projects linked to Dajin’s offshore expansion, including the construction of new heavy-lift vessels for the offshore wind industry.
Offshore wind energy drives new structural solutions
The development of large-capacity jackets responds to the continuous growth of offshore wind farms and the need for structures capable of supporting larger turbines in complex marine environments.
Dajin believes the project consolidates its position as a global manufacturer of high-end offshore equipment and reinforces Chinese industrial capacity within the international offshore wind energy supply chain.
Source and photo: https://www.dajin.cn/index/index/detail?id=217&lang=EN