CSSC Chengxi built the first batch of 35 meters folding Marine rotor sail successfully delivered

On May 1, CSSC Chengxi Shipbuilding Repair Co., Ltd. under China State Shipbuilding Corporation Limited delivered 4 sets of 35m folding Marine rotor sails for Anemoi Marine Technologies, marking the successful launch of the first batch of 35m folding Marine rotor sails in China. CSSC Chengxi has once again achieved significant results in the field of ship energy conservation and emission reduction, green energy development and construction.

As the first folding rotor sail, compared with the previously delivered walking, fixed rotor sail, the internal structure of the product is more complex, the base construction period is longer, and the construction requirements are extremely strict. In the process of design, production and modification, the design process is easier to draft, in addition, on-site equipment installation and testing have no experience to follow, etc., which greatly increase the difficulty of production organization.

CSSC Chengxi Steel structure Division and Application Industry Management Department work together to meet difficulties. The project team actively summarized the construction experience of the first batch of walking and fixed rotor sails, maintained efficient communication with the customer team, formed a list of responsibilities for the implementation of key projects, the control of important nodes, and the preparation of important process documents, etc. From the aspects of production design, production planning, process control, and result verification, the whole process planning and control were carried out to overcome the difficulties in the construction process. The key quality points were controllable, and a number of practical tools were developed, further consolidating the production, technology and quality management foundation of Chengxi in the field of rotor sail construction.

The four projects delivered this time are the first foldable Marine rotor sails tailored for Anemoi and will be installed on a 388,000 DWT Valemax ore vessel, which can be lowered vertically to mitigate the impact on airflow and cargo handling operations.

The rotor sail consists of glass steel cylinder, steel tower cylinder, base and other structures, with advanced hydraulic folding and automatic adjustment system, the overall height of the product is 38 meters, the diameter of the outer cylinder is 5 meters, the diameter of the top disc is 10 meters, the total tonnage is 165 tons, the maximum design speed is 200 RPM, the base is equipped with 4 hydraulic cylinders, and the cylinder can be pushed out through the structure of the cylinder. The tipping Angle reaches 89°, which is close to level.

According to Anemoi's calculation, the rotor sail project is expected to achieve an annual energy saving effect of 10.7%, equivalent to reducing 1200-1500 tons of fuel use and 6,000 tons of carbon dioxide emissions, and the energy saving and emission reduction effect is significant.

CSSC Chengxi has achieved full coverage, construction capacity and technology coverage of the current mainstream fixed, walking and folding rotor sail products in the market, further laying the company's leading position in the field of Marine rotor sail construction, and knocking the door of success for the company to continue to promote industrial transformation and upgrading and enhance the core competitiveness of the enterprise. At present, the company has a number of optimized and improved new rotor sail projects are in intensive installation and commissioning.