Bureau Veritas Approvals Boost Confidence in Anemoi Rotor Sail Technology

Wind-assisted propulsion specialist Anemoi Marine Technologies has secured Bureau Veritas design assessment certificates across its Rotor Sail lineup, extending its approvals to all major global classification societies. The milestone lowers project risk and streamlines deployment for shipowners seeking immediate fuel savings and regulatory compliance under CII, EU ETS, and FuelEU Maritime rules.

London, UK | July 21, 2026 – Wind-assisted propulsion specialist Anemoi Marine Technologies Ltd (Anemoi) has secured a fresh round of design assessment certificates from classification society Bureau Veritas (BV). The approvals cover multiple iterations of its mechanical sail technology, reinforcing independent technical validation across the firm’s product line as shipowners face escalating regulatory pressure to curb marine fuel consumption.

The latest BV design approvals encompass Anemoi’s fixed and rail-deployed 3.5m x 24.5m Rotor Sails, including explosion-proof (EX-rated) configurations built for hazardous deck zones and shorter variants designed for vessels with stringent air-draft restrictions. Simultaneously, Anemoi is advancing class applications with Bureau Veritas for its larger 5m x 35m Rotor Sails in both fixed and folding formats.

With BV’s assessment complete, Anemoi’s entire commercial portfolio now holds design approvals across the world’s major classification societies, including Lloyd’s Register, DNV, ABS, ClassNK, and Bureau Veritas.

Strategic Significance for Shipowners & Marine Fuel Markets

Class design assessment certificates serve as an crucial benchmark in technology deployment. By validating that equipment can be safely manufactured, installed, and operated under rigorous international marine standards, these approvals streamline the engineering and testing phase for individual vessel projects.

Anemoi Rotor Sail Portfolio

For shipowners navigating tight drydock schedules and complex retrofit budgets, multi-class approval reduces project-specific assurance hurdles, shortening turnaround times for both newbuildings and retrofits.

Technical Architecture & Operational Flexibility

Anemoi’s technology harnesses the Magnus effect, a aerodynamic phenomenon where motor-driven vertical cylinders rotating in an airflow generate powerful perpendicular thrust. This auxiliary thrust relieves load from the main engine, directly reducing fuel burn and lowering greenhouse gas (GHG) emissions, including CO2, SOx, and NOx.

Key Portfolio Specifications

Class Approval vs. Approval in Principle (AiP): While an Approval in Principle (AiP) confirms concept feasibility within a defined framework, a Design Assessment Certificate verifies that detailed engineering designs meet class structural, electrical, and safety rules for production and installation.

Executive Insight

Commenting on the milestone, Clare Urmston, Chief Executive Officer of Anemoi Marine Technologies, stated:

“These latest approvals highlight how Anemoi is advancing in both technical maturity and scale of deployment, while continuing to focus on easing implementation for shipowners. Verification from Bureau Veritas and several other class societies is a crucial pillar for building confidence in Anemoi’s solutions, further driving the uptake of wind-assisted propulsion across the global market. These achievements are also a reflection of the hard work of our engineering team, who have successfully delivered the technical requirements needed to secure approvals across multiple leading class societies in a short timeframe.”

Regulatory Drivers & Commercial Outlook

The rapid commercialization of wind-assisted propulsion systems (WAPS) is being driven by stringent environmental regulations and carbon pricing mechanisms:

• EEDI & EEXI: Energy Efficiency Design Index (newbuilds) and Energy Efficiency Existing Ship Index (existing fleet) compliance.
• Carbon Intensity Indicator (CII): Annual operational rating systems that mandate progressive reductions in vessel carbon intensity.
• EU ETS & FuelEU Maritime: Regional carbon compliance penalties in European waters, making immediate fuel-saving technologies directly accretive to bottom-line performance.

By providing up to 10% to 30% fuel savings depending on vessel route, speed, and configuration, wind-assisted systems serve as an immediate bridge to lower operational expenditure while preserving flexibility for future alternative fuels such as methanol, ammonia, or hydrogen.

With operational deployments already active across multiple classed vessels, Anemoi’s multi-class validation signals that mechanical wind propulsion is moving rapidly from an innovative alternative to a mainstream maritime standard.

About Anemoi Marine Technologies

Anemoi Marine Technologies is a leading provider of Rotor Sail wind propulsion systems for the global shipping industry. Its patented technology harnesses wind power to substantially reduce vessel fuel consumption and emissions, including CO2, SOx, and NOx. Anemoi’s cutting-edge Rotor Sails deliver significantly higher thrust per square meter 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, its 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.

Source: Anemoi