Wave energy dissipating structures with multi sli t walls and a slant-ceiling panel are studiedexperimentally. Wave transmission coefficient, wave reflection coefficient, and wave set-up are measuredin 2-dimensional channel. Wave energy dissipating capacity of the hybrid structure presented arecompared with that of rock mound artificial reef, with that of pr e-cast concrete block mound artificial reef, and wave energy dissipating structure with slant ceiling panel. The present structure is more compactthan those of structures compared, to achieve similar wave energy dissipating capacity. Four-sensortechnique is also discussed to identify transfer matrix of slit walls. Wave energy dissipating capacity ofthe multi -slit walls are calculated using transfer matrix identified and compared with experiment s. Goodagreements suggest that wave energy dissipating structure with multi -slit walls can be predicted usingtransfer matrix without wave overtopping condition.
