Anemoi, my friend, is gauging rotor sails
In the United Kingdom, Anemoi Marine Technologies and Lloyd’s Register have published a technical paper urging the shipping industry to align how it measures the performance of wind assisted propulsion systems, arguing that a common approach would make fuel savings easier to verify and compare.
The paper looks at how three existing methods fit together: sea trial guidelines from the International Towing Tank Conference, DNV’s recommended practice for in service testing, and Anemoi’s own method for calibrating performance models using operational vessel data.
Today shipowners and technology providers rely on different measurement approaches, making it difficult to compare results across rotor sails and other wind propulsion systems or build a consistent business case for installation.
Anemoi’s method measures vessel performance with the system switched on and off during normal voyages, using the data to refine predictions of rotor sail forces and expected fuel savings.
The authors argue that combining the three frameworks could create a clearer standard for evaluating wind propulsion as more operators weigh the technology.
Category: Sustainable Marine Fuels
