Berge Bulk and Anemoi Marine Technologies  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.

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.”