Ocean waves hold potential to help in meeting the global demand for electricity. The conversion of energy from the waves to useful electrical power is done with the help of devices called wave energy converters. Modelling of the wave energy converter is important to be able to analyze different aspects of the device without developing the system in real time. The Novi Ocean wave energy converter has been modelled using MATLAB. The aim of this thesis is to model this device using WEC-Sim, an open-source code which is an extension to Simulink. The process of modelling the device using WEC-Sim was found to be easier than in MATLAB. The WEC-Sim model produced similar results to the MATLAB model. A simple controller was also implemented to control the output torque on the turbine. It was also understood that WEC-Sim allows seamless integration of controllers with the device model.