This paper deals with the characteristics of wave dissipation and wave force forthe proposed breakwater. For the characteristics of wave dissipation, random waveexperiment have been carried out to compare with the results of regular wave test which hadbeen performed before. And still more, wave forces acting on this breakwater have been investigated by experiment used regular waves. Based on results, the calculationmethod of design wave forces can be applied to this breakwater are presented as well asthe description of characteristics of wave left-lettlection and transmission.