Floating Offshore Wind Mooring Technology 2026 — PatSnap Eureka
Floating Wind Turbine Mooring Technology 2026
Mooring systems for floating offshore wind turbines have become a critical cost driver as the industry moves beyond 60 m water depths. This dataset spans 80+ patent and literature records from 2002 to 2026 across four mooring technology clusters.
Mooring Innovation Across Four Platform Archetypes
Floating offshore wind turbine (FOWT) mooring technology addresses three primary functions in this dataset: restraining platform motion across up to six degrees of freedom under combined wind, wave, and current loads; anchoring multiple floating structures in cost-efficient farm-scale configurations; and enabling installation and decommissioning with reduced marine operational complexity.
Retrieved records span four major platform archetypes — spar buoy, semi-submersible, tension leg platform (TLP)/tension leg buoy (TLB), and barge-type — each imposing distinct requirements on mooring geometry and line material. Literature confirms spar, semi-submersible, and TLP remain the dominant categories under active research and commercialization.
Core mooring elements across the dataset include catenary mooring lines (chain, wire rope, hybrid), taut and semi-taut configurations, tension legs (vertical tendons), shared anchor arrangements, clump mass additions, elastomeric mooring segments, and novel geometries such as bifurcated and six-line arrangements. Literature confirms that 80% of offshore wind resource potential lies in waters deeper than 60 m.
In retrieved records, innovation is relatively distributed — no single assignee accounts for more than approximately 12% of records in this dataset — suggesting a fragmented IP landscape with multiple viable competing approaches. TotalEnergies Onetech is the most active recent filer in retrieved records, with 8+ families across EP, WO, and US jurisdictions between 2023 and 2025.
Three-Phase Innovation Trajectory in FOWT Mooring
Retrieved records allow a clear three-phase characterization of FOWT mooring IP: foundational concepts (2002–2011), specialized architecture development (2013–2021), and commercial-urgency filings (2022–2026). Four distinct technology clusters account for the majority of records in this dataset.
Patent Records by Technology Cluster — Retrieved Records
Catenary/taut mooring line systems and shared anchor configurations account for the largest share of retrieved records in this dataset, with fully restrained platform and disconnectable mooring clusters each representing a distinct innovation wave.
↗ Click bars to exploreFOWT Mooring Filing Activity by Phase — Retrieved Records
Filing activity in retrieved records accelerated markedly in the 2022–2026 phase, with the most recent phase generating more than twice the annual record count of the early foundational phase in this dataset.
↗ Click bars to exploreKey Deployment Contexts for FOWT Mooring Technology
Retrieved patents and literature span four primary deployment contexts: deep-water offshore wind generation, farm-scale array infrastructure, multi-turbine floating platforms, and offshore operations support. Each context imposes distinct mooring system requirements.
Deep-Water Offshore Wind (>60 m)
The dominant application in the dataset, where literature confirms 80% of offshore wind resource potential lies in waters exceeding 60 m depth. Patents from TotalEnergies Onetech, Principle Power, University of Maine, and Equinor explicitly target water depths precluding fixed foundations. TSC Engineering’s 2024 WO patent explicitly addresses floating platforms for waters over 100 m depth.
Deep-Water WindFloating Wind Farm Array Infrastructure
TotalEnergies Onetech’s 2023 EP and WO patents introduce elastomeric mooring segments on peripheral lines and a common midwater junction buoy integrating shared mooring loads with inter-array cable routing. Subsea 7’s 2024 GB pending patent extends this to a midwater power hub moored with a taut tension leg system connecting dynamic cables from floating turbines to a substation.
Farm-Scale InfrastructureMulti-Turbine Floating Platforms
Hexicon AB’s 2017 US patent covers an elongated weathervaning platform carrying two or more turbines attached to at least two mooring points, with active platform rotation to optimize turbine wind alignment. Hitachi’s 2010 EP patent describes a movable mooring mechanism using a winding device to dynamically reposition turbines based on real-time wind direction, minimizing wake losses across multi-turbine arrays.
Multi-Turbine PlatformOffshore Operations Support & Intervention
Itrec B.V.’s 2021 WO patent describes a method in which a vessel and floating wind turbine share seabed anchors at the offshore operations site, reducing total anchor count and installation vessel time. Technip Energies France’s 2024 AU pending patent covers a floating intervention platform that temporarily docks onto an offshore FOWT for installation and maintenance in waters deeper than 60 m.
Offshore OperationsLeading Assignees in FOWT Mooring — Dataset Snapshot
In retrieved records, TotalEnergies Onetech is the most active recent filer with 8+ patent families across EP, WO, and US jurisdictions between 2023 and 2025. No single assignee accounts for more than approximately 12% of records in this dataset, indicating a fragmented IP landscape.
Top Assignees by Filing Count — FOWT Mooring (Dataset Snapshot)
↗ Click bars to exploreTotalEnergies Onetech
The most active recent filer in this dataset, with 8+ patent families filed across EP, WO, and US jurisdictions between 2023 and 2025. Key filings cover adaptive mooring devices with variable-length lines (EP/WO 2023, US 2025), subsea farm configurations with shared midwater junction buoys and elastomeric mooring segments (EP/WO 2023, US 2025), and floating structure mooring systems (EP/WO 2024). Several applications are approaching grant stage across multiple jurisdictions.
FranceSingle Buoy Moorings Inc.
With 7 records across WO, CA, US, and EP jurisdictions spanning 2010 to 2018, Single Buoy Moorings plays a foundational role in disconnectable pre-installed mooring systems for FOWT. Key patents include the pre-installed disconnectable mooring concept (WO 2010, US 2011, US 2014) and a floating wind turbine assembly with tensioned mooring lines converging at or above nacelle elevation (US 2018). Several granted US patents are active within this portfolio.
Switzerland / NetherlandsFive Advancing Frontiers in FOWT Mooring (2023–2026)
Based on filings dated 2023–2026 in this dataset, five technology directions are actively advancing: elastomeric/hybrid mooring materials, weathervaning turret mooring, six-DOF fully restrained platforms, farm-scale shared anchor infrastructure, and near-shore assembly methods.
Elastomeric and Hybrid Mooring Line Materials
TotalEnergies Onetech’s 2023 EP filing for subsea farm configurations introduces elastomeric material segments on peripheral mooring lines to manage differential loads across wind farm arrays. Literature from 2023 demonstrates that hybrid chain/HMPE mooring lines reduce peak tension relative to all-chain systems, with implications for fatigue life and material cost. This material innovation space is identified as underpatented relative to its technical importance in the dataset.
Weathervaning Turret Mooring Integration
Exponential Renewables’ 2026 WO filing for a turret connecting module represents an architecture that decouples the weathervaning floating structure from the fixed pre-laid mooring system via a selectively insertable turret module. This enables passive yaw alignment of the FOWT with wind direction without active mechanical systems. The patent is the most recent filing in the retrieved dataset, filed March 2026.
Catenary vs. Taut Mooring: Key Dimensions
Click any row to explore further.
| Dimension | Catenary Mooring | Taut / Semi-Taut Mooring |
|---|---|---|
| Restoring Mechanism | Gravity and line weight provide restoring force via curved line geometry | Pre-tension in lines provides restoring stiffness; reduced reliance on gravity |
| Platform Offset | Larger platform offsets under storm loading due to lower stiffness | Significantly reduced platform offset enabling more precise station-keeping |
| Water Depth Suitability | Widely used baseline; line length increases substantially at greater depths | Smaller seabed footprint enables deployment at greater depths than catenary |
| Installation Support | Standard marine installation; well-established methodology | Equinor (2022 WO/GB) demonstrates taut mooring enables stable crane positioning for offshore turbine assembly |
| Line Material | Typically steel chain; hybrid chain/HMPE combinations reduce peak tension per 2023 literature | HMPE or polyester rope common; elastomeric segments introduced by TotalEnergies (2023 EP) for farm arrays |
| Seabed Footprint | Larger anchor spread required; limits use in shared anchor farm configurations | Smaller footprint; compatible with shared anchor and tension leg farm designs |
| Key Patent Assignees | Principle Power (2013 US), University of Maine (2015 WO), Single Buoy Moorings (2010–2018) | Equinor Energy AS (2022 WO, GB), Subsea 7 (2024 GB), TotalEnergies Onetech (2023–2025) |
Frequently Asked Questions: FOWT Mooring Technology
Literature in the dataset confirms that fixed foundations are not economically viable beyond approximately 60 m water depth. Floating platforms with mooring systems are required for the roughly 80% of offshore wind resource potential that lies in waters deeper than 60 m. Patents from TotalEnergies, Equinor, and TSC Engineering explicitly target depths exceeding 60 m, with TSC’s 2024 WO patent targeting platforms for waters over 100 m.
The retrieved dataset organizes FOWT mooring innovation into four clusters: (1) catenary and taut mooring line systems, including hybrid chain/HMPE configurations; (2) shared anchor and farm-scale configurations where a single seabed anchor receives lines from multiple turbines; (3) fully restrained and six-DOF constrained mooring targeting motion suppression in all six degrees of freedom; and (4) disconnectable and pre-installed mooring systems enabling platform removal while leaving seabed infrastructure in place.
TotalEnergies Onetech is the most active recent filer in retrieved records, with 8+ distinct patent families filed across EP, WO, and US jurisdictions between 2023 and 2025. Their portfolio covers adaptive mooring devices with variable-length lines, subsea farm configurations with shared midwater junction buoys and elastomeric mooring segments, and floating structure mooring systems. No single assignee exceeds approximately 12% of total records in this dataset.
The University of Maine System Board of Trustees holds active patents across US, EP, and CA jurisdictions for shared anchor farm configurations, with filings spanning 2015 to 2022. The foundational 2015 WO patent establishes that each seabed anchor receives mooring lines from two or more different floating wind turbine platforms. The dataset notes that any commercial floating wind array developer planning to share seabed anchors should conduct FTO analysis against these filings before project financing.
Exponential Renewables, S.L. filed a WO patent in March 2026 — the most recent filing in the dataset — for a turret connecting module that is insertable into a weathervaning floating offshore structure to connect it to a pre-laid mooring system. This enables passive yaw alignment of the FOWT with wind direction without active mechanical systems, decoupling the rotating floating structure from the fixed seabed anchor infrastructure.
Conventional mooring accepts some degree of platform motion under environmental loads. The FRP approach, advanced by Entrion Wind, Inc. in 2024 US granted and 2025 US pending patents, attaches moorings to both the hull and the wind tower structure to suppress motion in all six degrees of freedom — surge, sway, heave, roll, pitch, and yaw. The dataset notes this may enable use of non-marine-adapted turbine control systems, potentially reducing turbine procurement cost.
Data and insights on this page are based on a limited patent and literature dataset and are for reference only. Figures may not represent the complete technology landscape.