Anemoi Completes Rotor Sail Retrofit on NSU TUBARAO, Marking 1.6 Million DWT Milestone

Anemoi Completes Rotor Sail Retrofit on NSU TUBARAO, Marking 1.6 Million DWT Milestone Anemoi Marine Technologies has successfully completed the installation of five 35-meter Rotor Sails on the 400,000 DWT ore carrier NSU TUBARAO, owned by NS United Kaiun Kaisha, Ltd. (NSU) and chartered by Vale International. The retrofit, carried out during scheduled drydocking in October at Zhoushan Xinya Shipyard Co., Ltd., China, is expected to reduce the vessel’s annual fuel consumption by 6–12% through wind-assisted propulsion. This project marks a significant milestone for Anemoi, with the company now having fitted over 1.6 million DWT of vessel tonnage with Rotor Sails. Clare Urmston, CEO of Anemoi, commented: "The scale of this project demonstrates the market’s growing confidence in wind power as a key enabler of lower-emission shipping. Working with forward-thinking partners like NSU, Vale, and Class NK, we continue to advance Rotor Sail technology and show how optimized propulsion integration can maximize wind-assist benefits." The retrofit on NSU TUBARAO included more than the Rotor Sails themselves. The vessel was equipped with a new shaft generator to enhance overall efficiency, integrated with the Rotor Sails via an advanced control system. This allows coordinated operation between wind propulsion and onboard power supply, ensuring optimal energy use without affecting operational schedules. In addition to the hardware installation, NSU implemented digital solutions to optimize power usage and vessel routing. Using Manta’s FuelOpt, the vessel can manage main engine power efficiently, maximizing fuel savings. Combined with NAPA’s Voyage Optimisation toolbox, NSU TUBARAO is able to leverage favorable winds to the fullest while maintaining precise departure and arrival times. The vessel is now operating under a long-term charter for Vale, transporting iron ore with enhanced fuel efficiency and reduced emissions. The integration of wind propulsion, digital power management, and voyage optimization reflects a growing industry trend toward sustainable shipping solutions and demonstrates the practical benefits of combining renewable energy with modern vessel operations. Anemoi’s Rotor Sails are designed to capture wind energy and convert it into rotational motion that supplements the vessel’s main propulsion. This hybrid system reduces fuel burn, lowers carbon emissions, and contributes to more environmentally responsible shipping practices. The successful retrofit of NSU TUBARAO highlights the commercial viability of wind-assisted propulsion for large bulk carriers. As shipping companies face increasing pressure to reduce emissions and meet regulatory requirements, solutions like Rotor Sails offer a tangible pathway to greener operations without compromising operational performance. The completion of this installation not only strengthens Anemoi’s position as a leading provider of wind-assisted technologies but also reinforces the broader adoption of innovative, low-emission solutions across the global shipping industry. Website : www. sbb-co.org Number :00989365947495 email address : jobs@sbb-co.org