A wind-assisted propulsion system installed on a commercial bulk carrier has completed its second intermediate survey with a clean bill of health, offering what developers describe as independently verified proof of long-term durability for rotor sail technology.
Anemoi Marine Technologies announced that the M/V Afros — a 64,000 DWT ultramax vessel owned by Blue Planet Shipping — showed no structural or operational issues across its four rotor sails after more than eight years in service, according to Ship & Bunker. The survey was conducted by Lloyd’s Register at Jiangsu Watts Energy & Engineering in April 2026.
## Rotor Sails Installed in 2018
The rotor sails were first fitted to the Afros in 2018, making this latest survey a significant milestone for the technology’s commercial track record. Since installation, the system has logged performance across 154 voyages while maintaining an operational availability rate exceeding 95%, as reported by Ship & Bunker.
## Fuel and Emissions Impact
According to Anemoi, the wind propulsion system has delivered measurable environmental and operational benefits over its service life:
– **1,340 metric tonnes** of bunker fuel saved
– **4,980 metric tonnes** of well-to-wake CO₂ emissions reduced
– More than **95% operational availability** maintained throughout
## Significance for Wind-Assisted Shipping
Anemoi stated that the survey results provide independently verified evidence supporting the long-term reliability of wind-assisted propulsion in active commercial shipping operations. As the industry continues to face mounting pressure to reduce emissions and fuel consumption, data points such as these are increasingly valuable for operators evaluating alternative propulsion technologies.
The Afros represents one of the longer-running real-world case studies for rotor sail performance in bulk carrier operations.
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Gulf Bunkering does not provide operational or security guidance. This article is for informational purposes only. Operators should consult flag state authorities, P&I clubs, and relevant advisories for decisions relating to transit planning.
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Sources: Ship & Bunker
