An array of perforated hollow hemispherical shaped artificial reefs (HSAR) can be used as a submerged breakwater to provide opportunities for environmental enhancement, aesthetics and wave protection in coastal areas due to their characteristics that are not found in conventional breakwaters. These characteristics include the ability to promote water circulation and provide a fish habitat enhancement capability. In this paper, a study of the parameters influencing wave transmission through the proposed submerged breakwater is presented based on two dimensional tests using regular and irregular water waves conducted at Queens University Coastal Engineering Research Laboratory (QUCERL). The influences of wave steepness (Hi/gT2), reef proportion (h/B), submergence depth (h/d) and reef configurations on wave transmission was studied. Mathematical models for wave transmission were developed using Multiple Regression Analysis and can be used to predict the performance of the proposed submerged breakwater.