In the present work, an experimental and numerical analysis of a two hinged bodies attenuator wave energy converter (WEC) was carried out, considering environmental conditions of a deployment site in southern Chile. Experiments were conducted at the Wave/Towing Tank facility at Universidad Austral de Chile; while for the numerical analysis, a hinged-body module was developed and included into the open-source code NEMOH, which is based on potential flow theory and panel method. The validation of the numerical model was carried out through experimental measurements using a 1:100 scale WEC model, under regular and irregular waves, in a similar frequency range as the numerical study. Regarding irregular wave tests, the JONSWAP spectrum formulation was used considering three sea states: operational, annual storm and 100-year storm conditions. The numerical results showed good agreement with experiments, allowing further development of additional aspects such as multiple articulations and damping considerations due to different power take-off (PTO) systems. Furthermore, the applicability of the hinged-body addition in NEMOH is presented; although; the effect of mooring lines on the response of the floater has to be further analysed.