Lloyd's Register Confirms Efficiency of Anemoi Rotor Sails on TR Lady Kamsarmax

Image Credits: ANEMOI

Anemoi Marine Technologies, a frontrunner in wind-assisted propulsion, has shared some exciting news about its Rotor Sail system after nearly a year of thorough testing. Lloyd’s Register Advisory has confirmed the methods Anemoi used too calculate fuel and emissions savings from three 24-meter high Rotor Sails installed on the TR Lady, a Kamsarmax bulk carrier managed by Tufton Investment Management Ltd and chartered by Cargill. This extensive analysis provides a solid benchmark for assessing wind-assisted propulsion performance across various real-world scenarios.

Throughout the testing phase, TR Lady navigated diverse waters including the Indian Ocean and South Atlantic, as well as busy shipping lanes like the Strait of Malacca. The team analyzed data from eight consecutive trips—both laden and ballast—to derive an average for fuel consumption and emissions reductions.

The results were impressive: an average daily saving of 1.9 tonnes of fuel and 7.0 tonnes of CO2 (well-to-wake), translating to around 9.1% in net propulsion fuel savings. These findings closely align with Anemoi’s initial prediction of a 10% reduction—definitely good news! However, it’s worth noting that since TR Lady doesn’t follow fixed routes, results varied based on different voyages and prevailing wind conditions.

For instance, during one particular journey across the North Pacific lasting 22 days, they recorded an impressive average saving of 21% in net propulsion fuel reduction! Anemoi emphasizes openness over cherry-picking favorable routes; they wont to provide a extensive view that reflects long-term performance accurately.

Lloyd’s Register Advisory validated these findings as reliable indicators of Rotor Sail efficiency. Dr. Dogan Uzun from Lloyd’s noted that their autonomous verification confirms Anemoi’s methodology is spot-on when ship-specific coefficients are applied correctly. Their assessment utilized high-frequency operational data alongside computational fluid dynamics (CFD) analyses for vessels equipped with rotor sails—showing how robust data can significantly cut down uncertainties while aiding emission reductions in commercial shipping.TR Lady was outfitted with three smaller Rotor sails measuring just five meters wide but standing tall at 24 meters—a design choice made to meet air draft requirements without compromising functionality.Meanwhile, Anemoi is also testing larger versions at heights reaching up to 35 meters which promise even better performance due to their higher aspect ratios.

Clare Urmston, CEO at Anemoi Marine Technologies remarked on this independent verification as vital for fostering trust within the industry: “Lloyd’s rigorous approach reassures shipowners that our technology delivers tangible savings.” she emphasized that credibility comes through transparency—a principle guiding their mission towards clean maritime innovation through emerging technologies like wind propulsion.

Nicolas Tirogalas from Tufton expressed enthusiasm about how closely recent calculations matched expectations: “These results not only validate our technology but highlight its operational benefits.”

Chris Hughes from Cargill added another layer by stating how crucial it is indeed to understand real-world performance metrics for such technologies: “The combination of rotor tests conducted aboard TR Lady along with LR’s validation boosts confidence in our analysis.” He mentioned using these insights already to refine weather routing strategies for TR Lady while informing future decisions regarding fleet-wide deployment of wind assist technologies.With over ten years’ worth of operational data collected since its inception in 2013, Anemoi stands out among competitors thanks to this wealth of knowledge—and they’re committed to sharing real-world performance insights openly regarding vessels utilizing their innovative rotor Sail tech.