ANEMOI
Anemoi Marine Technologies designs and supplies Flettner Rotor Sails — wind-assisted propulsion systems for commercial ships — serving ship owners and operators in dry bulk, tankers, gas carriers, and ferries through direct enterprise sales and shipyard partnerships.
- Company typePrivate
- Founded2015
- HeadquartersLondon, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What ANEMOI does
Anemoi Marine Technologies Ltd is a UK-based designer and supplier of Flettner Rotor Sails — tall, motor-driven rotating cylinders that harness the Magnus Effect to provide auxiliary wind propulsion to commercial ships. The company was founded in 2007, incorporated in 2015, and operates a headquarters in London with a new state-of-the-art production facility in China unveiled in 2025 targeting 200 rotor sails annually by 2027. Its core product line includes the Rotor Sail itself (available in standard and custom sizes up to 5m diameter and 35m height) and three deployment systems: a fixed foundation for unobstructed decks, a patented Rail system for moving sails longitudinally or transversely during cargo operations, and a patented Folding system that lowers sails from vertical to horizontal for air-draft-restricted routes. An EX-Rated variant addresses hazardous-zone requirements on tankers and gas carriers, and a bridge-mounted automated control system handles operation, performance monitoring, and safety shutdowns.
The company serves ship owners, operators, and charterers in dry bulk (Capesize, VLOC, Newcastlemax, Valemax, Ultramax, Kamsarmax), tankers (MR and chemical), LNG/LPG carriers, and ferries/RoRos. Named customers include Vale, U-Ming, NS United, Berge Bulk, Oldendorff, Blue Planet Shipping, Hafnia, Tufton, and Union Maritime, with 29 Rotor Sails installed across 7 vessels and reported fuel and emissions reductions of 5–30% per ship. Revenue is generated through hardware sales of the rotor sail systems, project services covering feasibility, class approval, integration, and commissioning, lifecycle support over the 25-year design life, and bespoke fuel-saving assessments used as the lead-generation tool. Distribution is via direct enterprise field sales supplemented by shipyard framework agreements with COSCO SHIPPING Heavy Industry, NACKS, and Guangzhou Shipyard International, and design approvals from DNV, Lloyd's Register, and ClassNK. The company is preparing to go public via a £150 million reverse takeover of Trasna Technologies announced in October 2025.
ANEMOI firmographics
Firmographics- Name
- ANEMOI
- Legal name
- Anemoi Marine Technologies Ltd
- Website
- https://anemoimarine.com
- Company type
- Private
- Founded year
- 2015
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Anemoi Marine Technologies designs and supplies Flettner Rotor Sails — wind-assisted propulsion systems for commercial ships — serving ship owners and operators in dry bulk, tankers, gas carriers, and ferries through direct enterprise sales and shipyard partnerships.
- Ownership category
- akta.pro rank
ANEMOI industry classification
Industry- Product category
- Marine Wind Propulsion Systems
- akta.pro primary industry
- Hydrodynamics & Performance Engineering (Resistance, Propulsion, Seakeeping, Maneuvering) (IMAJAGAB)
- akta.pro secondary industry
- Propellers & Waterjets (IMAJAHAE)
Keywords
Where ANEMOI is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices3 records
Markets served
ANEMOI business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure
Revenue model
- Rotor Sail Hardware Sales: Sale of rotor sail systems including the rotating cylinder, tower, bearings, and foundation. Systems are priced based on size (diameter x height) and deployment system type. Includes both newbuild and retrofit installations.
- Installation and Project Services: Full project delivery from feasibility study through design, class approval, vessel integration, equipment installation, and commissioning. Includes supervision services and crew training.
- Lifecycle Support and Maintenance: Ongoing support during the 25-year lifespan of rotor sails including remote support, spare parts, software updates, and advanced data analysis. Includes periodic performance reporting.
- Fuel Saving Assessments: Bespoke fuel and emission saving assessments providing detailed analysis of potential savings for specific vessels. First step in customer acquisition funnel.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Multi-year contract | Standard Fixed Rotor Sail - Suitable for vessels where cargo operations and air draft are not constraints |
| Unit Pricing | Multi-year contract | Rail Deployment System - For vessels with complex cargo operations like Bulk Carriers |
| Unit Pricing | Multi-year contract | Folding Deployment System - For vessels with air draft restrictions |
| Unit Pricing | Multi-year contract | EX-Rated Rotor Sail - For hazardous zone installations on Tankers and Gas Carriers |
Go-to-market motion3 records
Distribution channels5 records
Marketing channels6 records
ANEMOI product offering
Product offeringCore offering
ANEMOI designs, manufactures, and installs Rotor Sail (Flettner Rotor) systems for commercial shipping vessels. These rotating cylindrical sails harness the Magnus Effect to provide auxiliary wind propulsion, reducing fuel consumption and emissions by 5-30%. The company offers the rotor sails in standard sizes with three deployment configurations (Fixed, Rail, Folding), plus an EX-rated variant for hazardous zones, and provides full project services from feasibility assessment through installation and 25-year lifecycle support.
Product overview
Anemoi Marine Technologies offers a unified wind-assisted propulsion system centred on its Rotor Sail (Flettner Rotor) technology, combined with flexible deployment options and comprehensive project services. The core Rotor Sail product is available with three deployment systems—Fixed Foundation (standard), Rail Deployment System (patented, for repositioning along deck), and Folding Deployment System (patented, for lowering horizontally)—plus an EX-Rated variant for hazardous zones. These hardware products are complemented by a Bridge Control System for automated operation and a Fuel & Emission Saving Assessment service for bespoke performance analysis. The company also provides end-to-end installation services from feasibility through lifecycle support, positioning the offering as a complete turnkey solution rather than standalone equipment.
Differentiator
Problem solved
Functional benefit
Products and services
- Anemoi Rotor Sails (Flettner Rotors) Primary wind-assisted propulsion technology consisting of tall rotating cylinders that harness wind energy via the Magnus Effect to provide auxiliary propulsion to commercial vessels. Manufactured from lightweight composite materials with steel tower, available in standard sizes with 25-year design life. Reduces fuel consumption and emissions by 5-30%. Suitable for Bulk Carriers, Tankers, Gas Carriers, RoRos, and Ferries.
- Rail Deployment System Patented deployment system allowing Rotor Sails to be moved longitudinally or transversely along the deck, enabling cargo loading and unloading operations to proceed without obstruction. Operated by two crew members in approximately 10 minutes. Designed for bulk carriers and vessels with complex cargo operations.
- Folding Deployment System Patented hydraulic system allowing Rotor Sails to be lowered from vertical to horizontal position to navigate under low bridges and avoid impact on cargo operations. Push-button operated, takes under 10 minutes to raise or lower.
- Fixed Foundation System Standard fixed foundation system for Rotor Sail installation where the rotor sail height is below the existing vessel air draft and cargo operations are limited. Recommended for tankers, ferries, and RoRos where the technology will not interfere with operations.
- EX-Rated Rotor Sails Explosion-rated version of the Rotor Sail for installation on vessels with hazardous zones such as tankers and gas carriers. Meets explosion safety requirements for equipment in hazardous areas on product tanker decks.
- Fuel & Emission Saving Assessment Bespoke analysis service providing vessel-specific Rotor Sail arrangement recommendations and estimates of potential fuel and emissions savings. Includes a detailed report with route assessments, performance results for various vessel speeds and Rotor Sail configurations, concept arrangement drawings, and expected equipment payback period. First step in customer acquisition funnel.
Quantifiable outcome
- 5-30% fuel and emission reduction per vessel
- +9 more outcomes
Companies that use ANEMOI
Customer profileNamed customers9 records
Segments6 records
Ideal customer profiles3 records
ANEMOI technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
AI capability2 records
Feature7 records
ANEMOI partnerships and signals
Strategic signalScale indicators11 records
Recent moves8 records
Expansion highlights6 records
ANEMOI competitors and assessment
Company assessmentEmerging players
- Oceanbird: Sweden-based joint venture between Wallenius Wilhelmsen and Alfa Laval developing rigid wing sails primarily for ro-ro and car carriers. An emerging player in the same wind-propulsion category with partial segment overlap.
- GT Wings: UK-based developer of the AirWing, an oscillating wing airfoil system for wind-assisted ship propulsion. A smaller, earlier-stage alternative wind technology competitor with similar customer targets.
Direct peers
- Norsepower: Finland-based provider of Flettner rotor sails for commercial shipping, the closest direct competitor to Anemoi using the same Magnus Effect technology. Both target bulk carriers, tankers, and ro-ros with class-approved rotor sail systems.
- BAR Technologies: UK-based developer of WindWings, a rigid wing sail wind-assisted propulsion system deployed on Cargill's Pyxis Ocean. Competes directly with Anemoi for shipowner wind-propulsion orders across bulk carriers and tankers.
- Econowind: Netherlands-based provider of VentoFoil containerized wind-assist units, designed to fit standard container slots on deck. Competes for wind-propulsion retrofit and newbuild orders with a smaller-footprint alternative to rotor sails.
- bound4blue: Spanish supplier of eSails, suction-based vertical wind-assisted propulsion units for vessels including ro-pax ferries and bulk carriers. Targets the same wind-propulsion decarbonization use case as Anemoi's rotor sails.
Others
- Cargill: Global agricultural commodity trader and major dry bulk charterer that has deployed WindWings on Pyxis Ocean. Functions as both a customer and ecosystem participant for wind propulsion rather than a direct competitor, but is highly relevant as a repeat-bulk operator.
Broad incumbents
- ABB Marine & Ports: Global supplier of marine propulsion, automation, and electrification systems including shaft generators and hybrid solutions that compete for shipowner decarbonization budgets alongside wind-assisted propulsion.
- Wärtsilä: Finland-headquartered broad marine technology, propulsion, and decarbonization solutions provider. Competes with Anemoi indirectly via alternative fuels, engine efficiency, and voyage optimization offerings that address the same decarbonization mandate.
- Kongsberg Maritime: Norway-based broad marine systems supplier offering propulsion, automation, and digital solutions for commercial shipping. Relevant incumbent peer for Anemoi in the broader marine decarbonization and propulsion stack.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
ANEMOI social profiles
Digital presenceANEMOI compliance and trust
Trust signalCompliance4 records
ANEMOI financial estimates
Financial estimateRevenue estimate
Valuation estimate
ANEMOI leadership team
Management profileNumber of profiles
Profiles8 records
ANEMOI funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ANEMOI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about ANEMOI
What does ANEMOI do?
ANEMOI designs, manufactures, and installs Rotor Sail (Flettner Rotor) systems for commercial shipping vessels. These rotating cylindrical sails harness the Magnus Effect to provide auxiliary wind propulsion, reducing fuel consumption and emissions by 5-30%. The company offers the rotor sails in standard sizes with three deployment configurations (Fixed, Rail, Folding), plus an EX-rated variant for hazardous zones, and provides full project services from feasibility assessment through installation and 25-year lifecycle support.
Is ANEMOI a public or private company?
ANEMOI is a private company. It is classified as venture growth investor backed and is currently operating.
When was ANEMOI founded?
ANEMOI was founded in 2015. It employs 11 to 50 people.
Where is ANEMOI based?
ANEMOI is headquartered in London, United Kingdom, in the Europe region.
How does ANEMOI make money?
Four revenue lines are on record. Rotor Sail Hardware Sales are the primary driver. The others are installation and Project Services, lifecycle Support and Maintenance and fuel Saving Assessments.
Who are ANEMOI's main competitors?
Emerging players on record are Oceanbird and GT Wings. Direct peers are Norsepower, BAR Technologies, Econowind and bound4blue. Cargill is listed as an others. Broad incumbents are ABB Marine & Ports, Wärtsilä and Kongsberg Maritime.
Does ANEMOI have an API?
No public API is recorded for ANEMOI.
What industry is ANEMOI in?
ANEMOI's product category is Marine Wind Propulsion Systems. Its primary akta.pro industry code is IMAJAGAB, Hydrodynamics & Performance Engineering (Resistance, Propulsion, Seakeeping, Maneuvering), with a secondary code of IMAJAHAE, Propellers & Waterjets.