Cable System Engineering Cost Reductions for Deepwater Floating Offshore Wind Event: Global Offshore Wind Conference Date: June 2018 Author: Gilles Gardner, Renan Tapias Hywind’s installation in 2017 was a watershed moment for floating offshore wind which marked the transition of the technology from pilot projects into an early demonstration of commercialisation. This transition was naturally accompanied by the subject of scale. The advent of large floating wind farms introduces the opportunity to leverage economies of scale in order to achieve cost reductions. One approach to achieving this is through optimisation of the cable configuration. Along the extensive coastline of several countries in Europe, 80% of potential offshore wind projects are located in water depths greater than 60m. Additionally, one of the largest potential markets for floating offshore wind turbines is located in North America. Approximately 60% of potential US offshore wind projects are located in deeper water (>200m water depth). Each of these areas will require robust subsea solutions. Floating offshore wind turbines present the additional challenge of designing a subsea system that absorbs the vertical motions in the array cable, effectively stopping them from being transmitted in ways that will cause damage over time. The touchdown point is a critical area for the failure of cables particularly in highly dynamic applications. In order to mitigate fatigue and over bending issues at the array cable touch down point, subsea arches are often considered. These structures isolate the motion of the floating wind turbine unit from the cable touch down point, vastly reducing the loading at the critical bending location. Subsea arches present added cost to a project through materials, additional foundations and extended installation durations, which might not always be the most cost-effective solution. The optimisation of the cable configuration design to minimise the cost impact through serial production and installation campaign sequencing are discussed. If you would like a copy of this technical paper register to download it (pop-up form). All technical papers Share this page Share on FacebookShare on LinkedinShare on TwitterEmail Services Production & Export Riser Concept Engineering Steel Catenary Risers Top Tensioned Risers Hybrid Risers Flexible Risers Composite Risers Subsea Jumper Spools Subsea Umbilicals Deep Sea Mining Drilling, Completion & Workover Drilling Risers Completion & Workover Risers Subsea Wellheads & Conductors Platform Conductors Well Engineering Minimum Facilities Platforms Conductor Supported Wellhead Platforms & CoSMOS Riser Delivery Management Integrity, Life Extension & Monitoring Riser Monitoring System Engineering Drilling Riser Management Anomaly & Incident Engineering Subsea Wellhead System & Life Extension Platform Well Integrity & Life Extension Inspection, Maintenance & Repair Subsea Engineering Services Component Detailed Design Decommissioning Engineering Engineering Critical Assessment Installation Engineering Mechanical Connectors Offshore Renewable Energy Qualification Testing Verification & CVA Well Plug & Abandonment Get the latest riser insights!Receive our riser news, published papers and blog posts in your inbox monthly.