In this work, the analysis of the Kriso Container Ship (KCS) test case using the OpenFOA RANS solver is proposed. Both ship resistance in calm water, propeller open water performances, self-propulsion calculations are proposed and the numerical results are validated by a comparison with the model scale experiments shared in literature and through workshops. The analyses are carried out applying the open source tools, from pre- to post- processing, available in the OpenFOAM environment, namely snappyHexMesh for the generation of the computational mesh, simpleFoam, pimpleDyMFoam, LTSInterFoam for the solution of the various
hydrodynamic problems and Paraview for the post-processing of the results. The comparison with the experimental measurements, finally, demonstrates the maturity of these solvers for a reliable and, from an engineering point of view, accurate prediction of some of the peculiar characteristics of the flow ships and propellers are subjected to.