Jepara government took the initiative to construct submerged breakwaters to reduce wave force. Development planning of submerged breakwater need to analyze the reduction of wave spectrum (H and T) around the breakwaters. On this research we applied two variances of structure. Analysis of wave spectrum used 2D hydro-dynamic mathematical model. Data that has been used for input model there are bathymetry data, wind data along 2009-2019, tide data, and coastline data. Wave height and wave period data was obtained by wind data along 2009-2019 which was calculated using DNS method. Model simulation of wave height and period applied in two formation at 5 wind direction (North, Northeast, East, Southeast, and South). Effectiveness is known by the changes of Hmax and T while passing the structure. Based on simulation model, highest wave height found during southeast wind and reduced after passing the breakwaters. Breakwaters with 4 structure (formation 2) has higher reduction percentage. Incoming wave height values decrease after passing submerged breakwater.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.