<p>This work presents the finite element modelling of a deepwater rigid jumper with cobalt-base/chromium/molybdenum/silicon, superalloys internal coating, and a coating-steel pipeline substrate. The objective of the coating is to protect a deepwater jumper steel against the corrosion caused by high content of H₂S and CO₂ in the oil and gas flow. Experimentally, cobalt-base/chromium/molybdenum/silicon coatings were developed on previous work, on substrates of pipeline steel, by a flame thermal spray process, and the properties of the coatings were extracted from such work. Hence, the mechanical properties of the coating and steel substrates were incorporated in the finite element models, along with the stress–strain material response of the coating and steel substrate, with the aim to study the structural response of the coating under bending loads. Afterwards, the finite element model of the rigid jumper, with the internal coating, was subjected to hydrostatic and internal pressure representative of a deepwater oil and gas field. The obtained stresses in the coating were below the yield stress, in the elastic region. At the coating–jumper interface, the stresses were also below the yield stress limit, which means that the coating will remain attached to the jumper under the defined operational conditions. The results also showed that the developed finite element modelling strategy was able to reproduce the true stress–strain curves of the coating and steel substrates with good agreement. </p>