Anemoi completes second Berge Bulk Newcastlemax Rotor Sails installation

(Posted on 29/01/26)

Berge Bulk and Anemoi Marine Technologies Ltd (Anemoi) have successfully completed the installation of four folding Rotor Sails, 5 meters in diameter and 35 meters in height, on Berge Bulk’s 208,000 DWT Newcastlemax vessel Berge Meru, marking the company’s second Rotor Sail project with Anemoi. Anemoi is a leading provider of Rotor Sail wind propulsion systems for the global shipping industry.

The installation was carried out at Yiu Lian Dockyards, China, in December 2025 and the vessel has now completed its first voyage to Singapore. The Rotor Sails, supplied by Anemoi, are designed to harness wind power to provide auxiliary propulsion, reducing fuel consumption and associated emissions during voyages.

This project follows the delivery of four 5x35m Anemoi Rotor Sails on Berge Neblina, a Berge Bulk Valemax, in June 2024, the first vessel in Berge Bulk’s fleet to be equipped with Anemoi’s Rotor Sail technology. The installation on Berge Meru draws on the operational experience gained from that earlier installation, together with ongoing in-service performance observations, contributing to confidence in the technology and aligning with Berge Bulk’s continued focus on practical, scalable decarbonisation measures.

The folding Rotor Sails can be lowered when required, allowing flexibility for port operations and air-draught restrictions while maintaining performance at sea, but the Rotor Sails do not need to be lowered in extreme weather, they will stop generating thrust when simply switched off.

Clare Urmston, CEO of Anemoi Marine Technologies, said: “We are proud to complete our second project with Berge Bulk, bringing large-scale folding Rotor Sails to another vessel. Berge Meru demonstrates how wind propulsion can be integrated into commercial bulk carriers in a practical and operationally flexible way. We value Berge Bulk’s continued confidence in our technology.”

Anemoi’s patented technology harnesses wind power to significantly reduce vessel fuel consumption and emissions, including CO?, SO?, and NO?. Our cutting-edge Rotor Sails deliver significantly higher thrust per square metre than conventional sails, offering a compact, high-performance solution for sustainable shipping. With over 15 years of R&D and proven commercial installations across various vessel types, Anemoi’s systems are designed for both newbuild and retrofit applications. Approved by leading classification societies, our solutions support compliance with key regulations such as EEDI, EEXI, CII, EU ETS, and FuelEU Maritime - advancing the transition to cleaner, more efficient maritime transport.