Dalian, February 5, 2026 – In a landmark achievement for maritime green technology, Shuangrui Environmental and Shuangrui Composites today launched the world's largest rotor sail with an outer diameter of 5 meters and a height of 35 meters. The milestone underscores China's growing leadership in wind-assisted propulsion systems and supports the global shipping industry's transition toward low-carbon operations.

The Ø5×35m rotor sail, developed and manufactured domestically, represents a significant breakthrough in China's independent R&D capabilities for large-scale maritime energy-saving equipment. By harnessing the Magnus effect, the rotating sail converts wind energy into forward thrust, offering a clean and efficient solution to reduce fuel consumption and carbon emissions for commercial vessels.

Engineered with advanced composite materials and a lightweight structural design, the rotor sail achieves industry-leading energy efficiency while maintaining exceptional mass uniformity and dimensional consistency that meet international top-tier standards. Shuangrui Composites leveraged its expertise in composite manufacturing and large-component engineering to overcome key technical challenges in ultra-large cylinder forming and integrated structural design.

Both Shuangrui Environmental and Shuangrui Composites are industrial units under the 725th Research Institute of China State Shipbuilding Corporation (CSSC), and their collaboration exemplifies cross-unit synergy aimed at accelerating innovation in maritime green technology.

With the International Maritime Organization (IMO) tightening emission regulations, wind-assisted propulsion has gained attention as a viable near-term decarbonization pathway. The launch of this record-sized rotor sail positions Shuangrui Composites at the forefront of the composite-based new energy equipment market and reinforces China's role in shaping the future of sustainable shipping.

Looking ahead, Shuangrui Composites plans to advance the industrialization and commercialization of rotor sail systems, offering scalable solutions to help shipowners worldwide meet environmental targets while improving operational economics.