OMDYN2 has made it possible to clarify the complexity of a dynamic multi-material cable under multiphysical stresses. Initial numerical models calibrated on tests have provided a better understanding of these interactions. The calculation of fatigue in armouring and conductors is now relatively reliable, but there is still work to be done on the life of conductors and insulators. The novel and realistic hydrodynamic tests of mussel colonisation indicate higher stresses than those described in the literature. Promising avenues for in-service fibre optic monitoring have also been identified.