Sedimentation Analysis in Determining the Optimal Breakwater Layout for Grajagan Beach Fishing Port, Banyuwangi Regency

Abstract Sedimentation that occurs in Grajagan Fishing Harbor, based on Google Earth images for the 2017-2023 time span tends to gather in the southern and eastern breakwater areas. The existence of sedimentation around the harbor can hinder fishing boat traffic. Sedimentation that occurs in the Grajagan Fishing Port area is thought to be less than optimal in the existing breakwater layout so that an optimal breakwater layout is needed. This study aims to determine the optimal breakwater layout based on hydro-oceanographic parameters using quantitative descriptive methods. The data used, namely: tidal, wind, wave, and sediment data. The data is used to analyze tidal patterns, wind and wave characteristics, current distribution patterns, and sediments. The results of the analysis are for determining the optimal breakwater layout. In Layout breakwater plan C sedimentation only occurs on the west side of the breakwater up to 0.6 m, while in the shipping channel and the berthing pond neither sedimentation nor erosion occurs. The simulation results of Layout breakwater plan A, B, and C, for Layout breakwater plan C is the most optimal and efficient in maintaining the berth pond for Grajagan Beach Fishing Port, Banyuwangi Regency.