Project Summary
TADEK delivered a pre-FEED inter-array cable (IAC) design for a 500 MW floating offshore wind (FOW) array as part of a COP project. The scope included dynamic cable configuration optioneering, structural analysis, array layout optimisation and early-stage procurement engagement covering the full system from seabed to hang-off.
The Challenge
Designing an inter-array cable system for floating wind required balancing electrical performance, structural resilience and installation practicality in an emerging supply chain environment.
- Integrate cable behaviour with floating platform motions and mooring dynamics.
- Ensure fatigue resistance and structural integrity under extreme offshore conditions.
- Optimise array layout to avoid clashes with moorings and subsea infrastructure.
- Evaluate configurations and cable capacities while navigating limited supplier data and early-stage pricing transparency
TADEK‘s Role
TADEK acted as the engineering lead for the pre-FEED dynamic cable system design, delivering technical analysis and procurement insight.
- Developed the inter-array cable configuration and dynamic behaviour modelling.
- Performed ULS and fatigue assessments for long-term structural reliability.
- Optimised array layout for installation feasibility and asset clearance.
- Engaged suppliers to inform early-stage procurement strategy and cost modelling.
Our Approach
A structured engineering workflow was applied to integrate platform dynamics, cable design and installation considerations.
- Conducted iterative analysis linking mooring performance with cable response.
- Performed configuration optioneering to assess dynamic cable concepts.
- Designed tailored cable cross-sections using TADEK’s PreCAB software.
- Applied ULS and fatigue analysis to validate long-term structural performance.
- Liaised with suppliers to refine component feasibility and cost assumptions.
Outcomes
The study delivered a technically robust and commercially informed cable design ready to support project development.
- Validated a pliant/lazy wave configuration to decouple platform motion and protect cable integrity.
- Identified strategic use of lower-capacity cables within strings to optimise costs.
- Produced an installation-ready array layout reducing clash risks with moorings and anchors.
- Delivered a comprehensive pre-FEED design report supporting the project’s next development phase.
