Brazilian mining giant Vale has decided to install five rotor sails from Anemoi Marine Technologies, the UK-based supplier of wind-assisted propulsion technology, onboard a 400,000 dwt Valemax.
The very large ore carrier (VLOC) Sohar Max is owned by Omani shipowner, Asyad. The agreement between Vale and Anemoi will see five 35 meters tall, 5 meters in diameter, cylindrical sails installed on the vessel.
The rotor sails will be fitted on Anemoi’s folding deployment system, whereby the sails can be folded from vertical to mitigate the impact on air draught and cargo handling operations.
The installation work is expected to be completed in the second quarter of 2024.
Rotor sails, also known as ‘Flettner rotors’, are vertical cylinders that harness the renewable power of the wind to provide additional forward thrust and improve the energy efficiency of the vessel, along with significant cuts to carbon emissions.
Vale’s fleet of Valemax vessels typically trades on deep-sea routes between Brazil, China and the Middle East, which are particularly well-suited for wind propulsion and analysing the savings. As a result, the installation of Anemoi rotor sails is expected to bring significant fuel and emission savings with an expected 6% fuel reduction and cutting CO2 equivalent emissions by up to 3,000 tons per ship per year.
“Wind energy will play a central role in our strategy to decarbonise the maritime transportation of iron ore,” Rodrigo Bermelho , Vale’s Shipping Technical Manager, commented.
“We are delighted to be announcing this partnership with Vale, Asyad and other key project stakeholders. Anemoi has been developing tailored solutions for Vale’s vessels for a number of years and this latest project signifies an important step in Vale’s decarbonisation journey, using wind assisted propulsion as they lead the way to improve the energy efficiency of their vessels and reduce their net emissions,” Nick Contopoulos , COO of Anemoi, said.
Anemoi has established a supply chain in China for manufacturing and delivering its rotor sails, partnering with CSSC Chengxi, Lianyungang Zhongfu Lianzhong Composite Material Group, CRRC Corporation and SaierNico Electric & Automation.
The company has also been appointed by Vale to undertake a full array of technical services both pre and post-delivery, including the vessel integration design with Shanghai Ship Design and Research Institute (SDARI). Classification for the project will be awarded by Lloyd Register, which is also providing services related to the Equipment Design Approval and Plan Approvals for vessel integration.
This latest project from Anemoi follows the successful retrofit of three rotor sails with Rail Deployment Systems onboard an 82,000 dwt Kamsarmax bulk carrier in June 2023. Initial data harvested from the vessel to date suggest more than 10% average annual savings can be achieved.
Rotor sails are proving a popular choice for ship owners looking for net-zero technologies to improve the energy efficiency of their vessels and help their ships meet critical international emission reduction targets, including EEDI/ EEXI and the Carbon Intensity Indicator (CII).