Offshore Wind

Harnessing wind energy in offshore environments.

Similar to land-based wind technologies, offshore wind uses turbines to generate energy which is delivered to the shore via an export cable. A main advantage of offshore wind is the stronger and more consistent winds that blow offshore, allowing the use of larger turbine blades. The development of offshore wind in Europe and Asia has preceded development activities in other parts of the world. However, several projects in the United States are currently underway. While the most common offshore wind energy technology is a three-bladed horizontal axis turbine, there are a variety of foundation types which can support the deployment of devices in a range of aquatic environments – shallow nearshore habitats to deeper offshore environments.

 

Monopile Foundation

 

Monopile foundations are used at shallow depths (0-30 m) and consist of a pile being driven to varying depths into the seabed (10-40 m) depending on the soil conditions. The pile-driving construction process is an environmental concern as the noise produced is incredibly loud and propagates far in the water, even after mitigation strategies such as bubble shields, slow start, and acoustic cladding are employed. As with land-based wind energy, collision risk with birds and bats is a major concern, though the impact is more difficult to quantify because carcasses that provide evidence of collisions become lost at sea. While the footprint of offshore wind energy is relatively small, it may still cause scouring. As with all electricity generation, there is a slight concern that electromagnetic fields generated by power cables may affect animals that use Earth's natural magnetic field for orientation, navigation, and hunting. Likewise, chemicals such as anti-corrosion paint and small amounts of oil and grease may enter the waterbody during spills, though some turbine designs do not require lubrication. Artificial reefing is likely to occur around wind farms as the new hard substrate provides protection and attracts colonizing invertebrates.

Tripod Fixed Bottom

 

Tripod fixed bottom foundations are used at transitional depth (20-80 m) and consist of three legs connecting to a central shaft that supports the turbine base. Each leg has a pile driven into the seabed creating a wide foundation that allows for the piles to be placed at a shallower depth in the seabed. The environmental effects are very similar to monopiles, except that the footprint is a little larger.

Gravity Foundation

 

Gravity foundations are used at shallow depths (0-30 m) and consist of a large and heavy base constructed of steel or concrete to rest on the seabed. The footprint is relatively large and may cause scouring, artificial reefing, or physical destruction of habitats upon introduction. Otherwise, the environmental effects are similar to monopiles.

Gravity Tripod

 

Gravity tripod foundations are used at transitional depths (10-40 m) and consist of two heavy concrete structures connected by three legs where one structure sits on the seabed while the other sits above the water. Very few offshore windfarms are currently using this foundation. The environmental concerns are identical to those of gravity foundations, though the scouring effect may be less significant depending on the design.

Floating Structure

 

Floating structure foundations are used at deep depths (40-900 m) and consist of a balanced floating structure moored to the seabed with fixed cables. The floating structure may be stabilized using buoyancy, mooring lines, or a ballast. The mooring lines may cause minor scouring or pose a risk of collision, but the turbine foundation is mostly located in the upper layer of the water column where there tend to be less organisms.

Total Results: 1223
Title Author Datesort descending Type of Content Technology Type Stressor Receptor
The Key Technologies and Development of Offshore Wind Farm in China Wu, J., Wang, Z., Wang, G. June 2014 Journal Article Wind Energy general, Offshore Wind
Assessing Ecological Risks of Offshore Wind Power on Kattegat Cod Hammar, L., Wikström, A., Molander, S. June 2014 Journal Article Wind Energy general, Offshore Wind Chemicals, EMF, Noise, Static Device Fish
GHG emissions and energy performance of offshore wind power Raadal, H., et al. June 2014 Journal Article Wind Energy general, Offshore Wind Socio-economics, Life Cycle Assessment
Marine Spatial Planning - Current Status 2014: National Planning in Sweden's Territorial Waters and Exclusive Economic Zone (EEZ) Swedish Agency for Marine and Water Management (SwAM) June 2014 Report Marine Energy general, Wind Energy general, Offshore Wind Socio-economics
US Department of Energy Announces Funding for Three Pioneering Offshore Wind Projects Alicia Gorton June 2014 Blog Article Offshore Wind
Lake Michigan Offshore Wind Feasibility Assessment Boezaart, A., et al. June 2014 Report Wind Energy general, Offshore Wind Noise Bats, Birds, Socio-economics
A Sustainability Index of Potential Co-Location of Offshore Wind Farms and Open Water Aquaculture Benassai, G., et al. July 2014 Journal Article Wind Energy general, Offshore Wind Static Device Fish, Socio-economics
Do man-made structures and water depth affect the diel rhythms in click recordings of harbor porpoises (Phocoena phocoena)? Brandt, M., et al. July 2014 Journal Article Wind Energy general, Offshore Wind Static Device Marine Mammals
Similar Diversity-Disturbance Responses to Different Physical Impacts: Three Cases of Small-Scale Biodiversity Increase in the Belgian Part of the North Sea De Backer, A., et al. July 2014 Journal Article Wind Energy general, Offshore Wind Static Device Ecosystem, Nearfield Habitat
Geological and Geotechnical Characterisation for Offshore Wind Turbine Foundations: A Case Study of the Sheringham Shoal Wind Farm Le, T., et al. July 2014 Journal Article Wind Energy general, Offshore Wind Static Device
Report on the Implications for European Sites Proposed Dogger Bank Creyke Beck Offshore Wind Farm UK Planning Inspectorate July 2014 Report Wind Energy general, Offshore Wind
Numerical Study for Wave-Induced Seabed Response around Offshore Wind Turbine Foundation in Donghai Offshore Wind Farm, Shanghai, China Chang, K., Jeng, D. July 2014 Journal Article Wind Energy general, Offshore Wind Energy Removal
Impact Hypothesis for Offshore Wind Farms: Explanatory Models for Species Distribution at Extremely Exposed Rocky Areas Schläppy, M., Saskov, A., Dahlgren, T. July 2014 Journal Article Wind Energy general, Offshore Wind Static Device Benthic Invertebrates
A Comparison of Top-Down and Bottom-Up Approaches to Benthic Habitat Mapping to Inform Offshore Wind Energy Development LaFrance, M., et al. July 2014 Journal Article Wind Energy general, Offshore Wind Benthic Invertebrates, Nearfield Habitat
Repeated Mapping of Reefs Constructed by Sabellaria spinulosa Leuckart 1849 at an Offshore Wind Farm Site Pearce, B., et al. July 2014 Journal Article Wind Energy general, Offshore Wind Benthic Invertebrates, Nearfield Habitat
Avoidance Behaviour of Birds around Offshore Wind Farms: Overview of Knowledge Including Effects of Configuration Krijgsveld, K. July 2014 Report Wind Energy general, Offshore Wind Static Device Birds
Marine Mammals Trace Anthropogenic Structures at Sea Russell, D., et al. July 2014 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Static Device Marine Mammals
Report on Environmental Impact Assessment and Mitigation Strategies TROPOS July 2014 Report Marine Energy general, Wind Energy general, Offshore Wind Energy Removal, Lighting, Static Device Ecosystem, Fish, Nearfield Habitat, Socio-economics
Computationally Efficient Modelling of Dynamic Soil-Structure Interaction of Offshore Wind Turbines on Gravity Footings Damgaard, M., Andersen, L., Ibsen, L. August 2014 Journal Article Wind Energy general, Offshore Wind Nearfield Habitat
Applicability of the "Frame of Reference" Approach for Environmental Monitoring of Offshore Renewable Energy Projects Garel, E., et al. August 2014 Journal Article Marine Energy general, Wind Energy general, Offshore Wind
Recent Developments of Ocean Environmental Description with Focus on Uncertainties Bitner-Gregersen, E., et al. August 2014 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Nearfield Habitat
Issuance of Incidental Harassment Authorizations to Deepwater Wind for the Take of Marine Mammals Incidental to Construction of the Block Island Wind Farm and Block Island Transmission System National Marine Fisheries Service August 2014 Report Wind Energy general, Offshore Wind Marine Mammals
Seals and Windfarms in the North Sea Molly Grear August 2014 Blog Article Offshore Wind
Predicting the Large-Scale Consequences of Offshore Wind Turbine Array Development on a North Sea Ecosystem van der Molen, J., et al. August 2014 Journal Article Wind Energy general, Offshore Wind Chemicals, Noise, Static Device Ecosystem
Offshore Wind Turbines and Commercial Vessel Traffic in the Atlantic Ocean Molly Grear August 2014 Blog Article Offshore Wind
Hearing frequencies of a harbor porpoise (Phocoena phocoena) temporarily affected by played back offshore pile driving sounds Kastelein, R., et al. September 2014 Report Wind Energy general, Offshore Wind Noise Marine Mammals
Biodiversity Offsets for Offshore Wind Farm Projects: The Current Situation in Europe Vaissière, A., et al. September 2014 Journal Article Wind Energy general, Offshore Wind Ecosystem
Thinking Globally and Siting Locally - Renewable Energy and Biodiversity in a Rapidly Warming World Allison, T., Root, T., Frumhoff, P. September 2014 Journal Article Wind Energy general, Land-Based Wind, Offshore Wind Socio-economics, Climate Change
Community Benefits, Framing and the Social Acceptance of Offshore Wind Farms: An Experimental Study in England Walker, B., Wiersma, B., Bailey, E. September 2014 Journal Article Wind Energy general, Offshore Wind Socio-economics, Stakeholder Engagement
An Integrated Visual Impact Assessment Model for Offshore Windfarm Development Depellegrin, D., Blažauskas, N., Egarter-Vigl, L. September 2014 Journal Article Wind Energy general, Offshore Wind Static Device Socio-economics
Implications for Offshore Wind Farm Ornithological Cumulative Impact Assessment: How the Manipulation of Density and Breeding Season Parameters Affects the Outcomes of Collision Risk Modelling Tongue, A. September 2014 Thesis Wind Energy general, Offshore Wind Birds
The Significance of Parameter Uncertainties for the Prediction of Offshore Pile Driving Noise Lippert, T., von Estorff, O. September 2014 Journal Article Wind Energy general, Offshore Wind Noise
Mapping Seabird Sensitivity to Offshore Wind Farms Bradbury, G., et al. September 2014 Journal Article Wind Energy general, Offshore Wind Dynamic Device, Static Device Birds
Assessing Environmental Impacts of Offshore Wind Farms: Lessons Learned and Recommendations for the Future Bailey, H., Brookes, K., Thompson, P. September 2014 Journal Article Wind Energy general, Offshore Wind Dynamic Device, Noise Birds, Ecosystem, Marine Mammals
Experimental Analysis of the Wake of a Horizontal-Axis Wind-Turbine Model Lignarolo, L., et al. October 2014 Journal Article Wind Energy general, Offshore Wind Nearfield Habitat
Pseudo Spectral Analysis of the Energy Entrainment in a Scaled Down Wind Farm Newman, J., Drew, D., Castillo, L. October 2014 Journal Article Wind Energy general, Offshore Wind Energy Removal
Modeling Large Offshore Wind Farms Under Different Atmospheric Stability Regimes with the Park Wake Model Peña, A., Réthoré, P., Rathmann, O. October 2014 Journal Article Wind Energy general, Offshore Wind Farfield Environment
Great Skua (Stercorarius skua) Movements at Sea in Relation to Marine Renewable Energy Developments Wade, H., et al. October 2014 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Static Device Birds
Strengthening the Role of Science in Marine Governance through Environmental Impact Assessment: A Case Study of the Marine Renewable Energy Industry Wright, G. October 2014 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Socio-economics
In Situ Mortality Experiments with Juvenile Sea Bass (Dicentrarchus labrax) in Relation to Impulsive Sound Levels Caused by Pile Driving of Windmill Foundations Dubusschere, E., et al. October 2014 Journal Article Wind Energy general, Offshore Wind Noise Fish
INORE: Sharing is Knowing Cameron McNatt and Michele Martini October 2014 Blog Article OTEC, Tidal, Wave, Offshore Wind
Assessing the Underwater Acoustics of the World's Largest Vibration Hammer (OCTA-KONG) and Its Potential Effects on the Indo-Pacific Humpbacked Dolphin (Sousa chinensis) Wang, Z., et al. October 2014 Journal Article Wind Energy general, Offshore Wind Noise Marine Mammals
Understanding Bird Collisions at Wind Farms: An Updated Review on the Causes and Possible Mitigation Strategies Marques, A., et al. November 2014 Journal Article Wind Energy general, Offshore Wind Dynamic Device Birds
Is EIA Part of the Wind Power Planning Problem? Smart, D., Stojanovic, T., Warren, C. November 2014 Journal Article Wind Energy general, Offshore Wind
The New Noise Mitigation System 'Hydro Sound Dampers': History of Development with Several Hydro Sound and Vibration Measurements Burns, B., et al. November 2014 Conference Paper Wind Energy general, Offshore Wind Noise
Dynamic Measurements of Pile Deflections as a Source of Underwater Sound Emissions during Impact Driving of Offshore Pile Foundations Kuhn, C., et al. November 2014 Conference Paper Wind Energy general, Offshore Wind Noise
New Achievements in Underwater Noise Modelling for Offshore Pile Driving Trimoreau, B., et al. November 2014 Conference Paper Wind Energy general, Offshore Wind Noise
Hydro Sound Measurements during the Installation of Large Diameter Offshore Piles using Combinations of Independent Noise Mitigation Systems Burns, B., et al. November 2014 Conference Paper Wind Energy general, Offshore Wind Noise
New Hydro Sound Dampers to Reduce Piling Underwater Noise Elmer, K., Savery, J. November 2014 Conference Paper Wind Energy general, Offshore Wind Noise
Eco-Maintenance for Complex Systems: Application on System of Renewable Energy Production Tchertchian, N., Millet, D. November 2014 Conference Paper Wind Energy general, Offshore Wind Ecosystem
Virginia Offshore Wind Technology Advancement Project on the Atlantic Outer Continental Shelf Offshore Virginia Environmental Assessment Bureau of Ocean Energy Management, Office of Renewable Energy Programs December 2014 Report Wind Energy general, Offshore Wind
Investigating the Co-Existence of Fisheries and Offshore Renewable Energy in the UK: Identification of a Mitigation Agenda for Fishing Effort Displacement de Groot, J., et al. December 2014 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Static Device Fish
Offshore Wind Submarine Cable Spacing Guidance TÜV SÜD PMSS, Red Penguin Associates December 2014 Report Wind Energy general, Offshore Wind
Report on the Implications for European Sites Proposed Dogger Bank Teesside A & B Offshore Wind Farm The Planning Inspectorate for England and Wales December 2014 Report Wind Energy general, Offshore Wind
Greenhouse Gas Emissions from Electricity Generated by Offshore Wind Farms Reimers, B., Özdirik, B., Kaltschmitt, M. December 2014 Journal Article Wind Energy general, Offshore Wind Socio-economics, Climate Change, Life Cycle Assessment
The Influence of Large Offshore Wind Farms on the North Sea and Baltic Sea - A Comprehensive Literature Review Clark, S., Schroeder, F., Baschek, B. December 2014 Report Wind Energy general, Offshore Wind Energy Removal Ecosystem, Farfield Environment, Nearfield Habitat
The Avoidance Rates of Collision Between Birds and Offshore Turbines Cook, A., et al. December 2014 Report Wind Energy general, Offshore Wind Dynamic Device Birds, Seabirds
Depth use and movements of homing Atlantic salmon (Salmo salar) in Scottish coastal waters in relation to marine renewable energy development Godfrey, J., et al. December 2014 Report Marine Energy general, Tidal, Wave, Wind Energy general, Offshore Wind Fish
Effect of pile-driving sound on the survival of fish larvae Bolle, L., et al. December 2014 Report Wind Energy general, Offshore Wind Noise Fish
A Life Cycle Co-Benefits Assessment of Wind Power in China Xue, B., et al. January 2015 Journal Article Wind Energy general, Offshore Wind Socio-economics, Climate Change, Life Cycle Assessment
Strategic Environmental Assessment (SEA) for Wind Energy Planning: Lessons from the United Kingdom and Germany Phylip-Jones, J., Fischer, T. January 2015 Journal Article Wind Energy general, Offshore Wind
The New Mode of Marine Planning in the UK: Aspirations and Challenges Scarff, G., Fitzsimmons, C., Gray, T. January 2015 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Socio-economics
The European Offshore Wind Industry - Key Trends and Statistics 2014 Corbetta, G., et al. January 2015 Report Wind Energy general, Offshore Wind
On the Effect of Offshore Wind Farms on the Atmosphere and Ocean Dynamics Ludewig, E. January 2015 Book Wind Energy general, Offshore Wind Energy Removal Farfield Environment
Offshore Wind Turbine Foundations: Staying Afloat in Deepwaters Sunderasan, S. January 2015 Book Chapter Wind Energy general, Offshore Wind Socio-economics
Offshore Wind Farms in the Southwestern Baltic Sea: A Model Study of Regional Impacts on Oxygen Conditions Janßen, H., et al. January 2015 Journal Article Wind Energy general, Offshore Wind Ecosystem
Special Issue: Renewable Ocean Energy Development and the Environment Zydlewski, G., Copping, A., Redden, A. January 2015 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Static Device Ecosystem
Renewable Energy Developments in an Uncertain World: The Case of Offshore Wind and Birds in the UK Masden, E., et al. January 2015 Journal Article Wind Energy general, Offshore Wind Birds
Lessons from Stakeholder Dialogues on Marine Aquaculture in Offshore Wind Farms: Perceived Potentials, Constraints and Research Gaps Wever, L., Krause, G., Buck, B. January 2015 Journal Article Wind Energy general, Offshore Wind Socio-economics, Stakeholder Engagement
Environmental Risk Evaluation System - An Approach to Ranking Risk of Ocean Energy Development on Coastal and Estuarine Environments Copping, A., et al. January 2015 Journal Article Marine Energy general, Tidal, Wave, Wind Energy general, Offshore Wind Chemicals, Dynamic Device, Energy Removal Birds, Fish, Marine Mammals
First year post-construction monitoring of bats and birds at Wind Turbine Test Centre Østerild Therkildsen, O., Elmeros, M. January 2015 Report Offshore Wind Dynamic Device Bats, Birds
Will Offshore Energy Face "Fair Winds and Following Seas"?: Understanding the Factors Influencing Offshore Wind Acceptance Teisl, M., et al. January 2015 Journal Article Wind Energy general, Offshore Wind Socio-economics, Stakeholder Engagement
A first approach to deal with cumulative effects on birds and bats of offshore wind farms and other human activities in the Southern North Sea Leopold, M., et al. January 2015 Report Wind Energy general, Offshore Wind Bats, Birds, Seabirds
Framework for Assessing Ecological and Cumulative Effects of Offshore Wind Farms: A First Approach to Deal with Cumulative Effects on Birds and Bats of Offshore Wind Farms and Other Human Activities in the Southern North Sea Leopold, M., et al. January 2015 Report Wind Energy general, Offshore Wind Bats, Birds
Renewables-To-Reefs? Decommissioning Options for the Offshore Wind Power Industry Smyth, K., et al. January 2015 Journal Article Wind Energy general, Offshore Wind Static Device Benthic Invertebrates, Ecosystem, Socio-economics, Life Cycle Assessment
Private Incentives for the Emergence of Co-Production of Offshore Wind Energy and Mussel Aquaculture Griffin, R., Buck, B., Krause, G. January 2015 Journal Article Wind Energy general, Offshore Wind Benthic Invertebrates, Socio-economics
Dark Green Electricity Comes from the Sea: Capitalizing on Ecological Merits of Offshore Wind Power? Toonen, H., Lindeboom, H. February 2015 Journal Article Wind Energy general, Offshore Wind Socio-economics
Rights and Ownership in Sea Country: Implications of Marine Renewable Energy for Indigenous and Local Communities Kerr, S., et al. February 2015 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Socio-economics
Disturbance Effects on the Harbour Porpoise Population in the North Sea (DEPONS): Status report on model development van Beest, F., et al. February 2015 Report Offshore Wind Noise Marine Mammals
Performance and Integrity of Protective Coating Systems for Offshore Wind Power Structures after Three Years Under Offshore Site Conditions Momber, A., Plagemann, P., Stenzel, V. February 2015 Journal Article Wind Energy general, Offshore Wind Chemicals
Offshore Wind Farms Development in Relation to Environmental Protected Areas Spiropoulou, I., Karamanis, D., Kehayias, G. February 2015 Journal Article Wind Energy general, Offshore Wind
Mitigating Wind-Turbine Induced Avian Mortality: Sensory, Aerodynamic and Cognitive Constraints and Options May, R., et al. February 2015 Journal Article Wind Energy general, Offshore Wind Dynamic Device Birds
Report on the Implications for European Sites Proposed Navitus Bay Wind Park UK Planning Inspectorate February 2015 Report Wind Energy general, Offshore Wind
Attitudes towards Marine Energy: Understanding the Values de Groot, J. March 2015 Thesis Marine Energy general, Tidal, Wave, Wind Energy general, Offshore Wind Socio-economics, Stakeholder Engagement
Scotland's National Marine Plan - A Single Framework for Managing Our Seas Marine Scotland March 2015 Report Marine Energy general, Wind Energy general, Offshore Wind Socio-economics
Preliminary Assessment of Offshore Wind Development Impacts on Marine Ecosystems Huang, H., Hall, A. March 2015 Report Wind Energy general, Offshore Wind Static Device Farfield Environment
Iteration cycle: Dealing with peaks in counts of birds following active fishing vessels when assessing cumulative effects of offshore wind farms and other human activities in the Southern North Sea Leopold, M., et al. March 2015 Report Wind Energy general, Offshore Wind Birds, Seabirds
Marine Planning for Wales - Strategic Scoping Exercise Welsh Government March 2015 Report Marine Energy general, Wind Energy general, Offshore Wind Socio-economics
TROPOS Project Final Report Brito, J. March 2015 Report Wind Energy general, Offshore Wind Socio-economics
Framework for Assessing Ecological and Cumulative Effects of Offshore Wind Farms: Cumulative Effects of Impulsive Underwater Sound on Marine Mammals Heinis, F., de Jong, C. April 2015 Report Wind Energy general, Offshore Wind Noise Marine Mammals
Practical Management of Cumulative Anthropogenic Impacts with Working Marine Examples Wright, A., Kyhn, L. April 2015 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Noise Ecosystem
Ocean Zoning for Conservation, Fisheries and Marine Renewable Energy: Assessing Trade-Offs and Co-Location Opportunities Yates, K., Schoeman, D., Klein, C. April 2015 Journal Article Marine Energy general, Wind Energy general, Offshore Wind Socio-economics
The Underwater Sound Field from Impact Pile Driving and Its Potential Effects on Marine Life Dahl, P., de Jong, C., Popper, A. April 2015 Magazine Article Marine Energy general, Wind Energy general, Offshore Wind Noise Fish, Marine Mammals
Seabird Flight Behavior and Height in Response to Altered Wind Strength and Direction Ainley, D., et al. April 2015 Journal Article Wind Energy general, Offshore Wind Birds, Seabirds
Environmental and Ecological Impacts of Wind Energy on Humans: Public Health Issues Walker, R., Swift, A. May 2015 Book Chapter Wind Energy general, Land-Based Wind, Offshore Wind Dynamic Device, EMF, Lighting, Noise
Overview of Issues Faced by Wind Energy Walker, R., Swift, A. May 2015 Book Chapter Wind Energy general, Land-Based Wind, Offshore Wind
Economic Impacts and Benefits of Wind Energy Projects and Other Sources of Electric Generation Walker, R., Swift, A. May 2015 Book Chapter Wind Energy general, Land-Based Wind, Offshore Wind Socio-economics
Wind Energy's Impact on Aviation, Radar, and Telecommunications Walker, R., Swift, A. May 2015 Book Chapter Wind Energy general, Land-Based Wind, Offshore Wind EMF Socio-economics, Navigation
Classification of Birds and Bats Using Flight Tracks Cullinan, V., Matzner, S., Duberstein, C. May 2015 Journal Article Wind Energy general, Offshore Wind Bats, Birds
Environmental and Ecological Impacts of Wind Energy on Humans: Public and Workforce Safety Issues Walker, R., Swift, A. May 2015 Book Chapter Wind Energy general, Land-Based Wind, Offshore Wind

Pages

Subscribe to Offshore Wind
Find Tethys on InstagramFind Tethys on FacebookFind Tethys on Twitter
 
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.
Subscribe to Offshore Wind