Design and in-service monitoring of power cables and moorings


Support to engineering consultancy firms, technology and farm developers in the design and in-service monitoring of power cables and moorings

  • Stability study of an export cable in an open tidal environment
  • Specification of characterisation and fatigue tests of dynamic cables under electro-thermomechanical coupled stress
  • Specification, monitoring and analysis of hydrodynamic tests
  • Pre-design, adaptation to a given site of a float/mooring/foundation system
  • Qualification of a nylon mooring Methodology and development of digital twins for in-service monitoring for moorings
  • Custom development of numerical tools and physical models for the design of foundations and moorings for wave and tidal systems


Several collaborative R&D projects on design and in-service monitoring of subsea power cables and moorings

  • Definition of a model for predicting the cables instability laid on rocky seabed, with high current speeds and in the presence of swell in the water column (STHYF project)
  • Proposal of a methodology for in-service monitoring fatigue for dynamic export cables of floating ORE systems (OMDYN2 project)
  • Precise characterisation of the dynamic and long-term behaviour of nylon mooring lines (POLYAMOOR project)
  • Definition of a methodology for in-service monitoring of floating wind turbine moorings (MHM-EMR project)
  • Development of the station keeping module of the DTOcean+ software suite dedicated to the optimisation of wave and tidal farms (DTOCEANPLUS project)


Teams with complementary and cross-disciplinary expertise: physical oceanography, structure calculation, offshore monitoring

Dedicated instrumentation

  • 4 measuring cages and instruments that can be attached to them: ADCP 5-beam, hydrophones, acoustic receivers, stereo video, camera
  • Video system with anti-fouling protection that can be deployed up to 200 m depth

Digital tools

  • Calculation model for the stability of a cable laid on seabed
  • Finite element model of hydromechanical assembly behaviour
  • Local cable fatigue model
  • DeepLinesTM licence
  • Nylon anchor line behaviour module interfaced with DeepLinesTM
  • NEMOH for the seakeeping of the floats
  • Station keeping module of the DTOcean+ suite


  • Hydrodynamic tests: loads on a cable in different roughness conditions for the cable and the seabed
  • Alderney Race: hydrosedimentary processes, high-resolution measurement of currents and turbulence

Contact us

Photo credit: France Energies Marines

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