Anemoi crafts verification method for WAPS performance
Revolutionary Wind Propulsion Verification Process Launched
UK-based Anemoi Marine Technologies has unveiled a groundbreaking performance verification process aimed at enhancing the efficiency and accuracy of wind-assisted propulsion systems (WAPS). This innovative methodology, verified by Lloyd’s Register, promises to significantly reduce costs while promoting the adoption of climate-friendly shipping solutions. The new approach is detailed in a whitepaper titled “Performance Verification Of Wind-Assisted Ship Propulsion Systems By On-Off Testing.”
Innovative Methodology for Enhanced Accuracy
Anemoi’s new performance verification process is designed to facilitate the broader implementation of wind-assisted propulsion technologies in maritime operations. The methodology involves a systematic approach to collecting and analyzing vessel data when the wind propulsion system is activated and deactivated under various operational conditions. This data is crucial for calibrating predictions regarding the forces generated by rotor sails and their impact on vessel performance.
The process allows for real-time monitoring and assessment throughout a ship’s lifecycle, enabling operators to make informed decisions on fuel savings and operational efficiency. Anemoi claims that this new verification method will effectively eliminate the challenges associated with traditional assessment techniques, such as the need to take vessels out of service for dedicated sea trials. This innovation is particularly timely, as shipowners face increasing pressure to comply with international emission reduction regulations, including the Energy Efficiency Design Index (EEDI) and the Carbon Intensity Indicator (CII).
The whitepaper also highlights the successful testing of the 82,000 dwt bulk carrier TR Lady, which is equipped with three 24-meter-high rotor sails developed by Anemoi. After a year of operation, the vessel achieved an average fuel savings of 9.1%, translating to a reduction of 7 tonnes of CO2 emissions per sailing day.
Growing Adoption of Rotor Sails in Shipping
As the maritime industry seeks effective solutions to enhance energy efficiency and reduce emissions, rotor sails have emerged as a viable option. Anemoi’s innovative technology has attracted attention from major shipping companies. In October 2024, the company partnered with Japanese maritime transport firm NS United Kaiun Kaisha and Brazilian mining giant Vale to install rotor sails on a 400,000 dwt very large ore carrier (VLOC). Following this, Taiwanese shipping company U-Ming Marine Transport commissioned Anemoi to equip rotor sails on a 325,000 dwt VLOC, aiming for fuel and emission savings of 10-12%.
In a collaborative effort to advance rotor sail technology, Anemoi, Norway’s DNV classification society, Singapore-based tanker owner Hafnia, and China-based shipbuilder Guangzhou Shipyard International (GSI) are working together to develop integration designs for medium-range tankers. This partnership underscores the growing momentum behind wind-assisted propulsion solutions as the shipping industry strives to meet stringent environmental standards and achieve net-zero emissions.
