Bathymetry is a measure of high and low seabed where bathymetry maps provide information about the seabed. This research was conducted in November 2018 - January 2019, in the waters of the Sasak coast of West Pasaman district. This study aims to determine the depth and shape of the seabed morphology as well as the type of sediment, The research method used is a survey method, then the sampling …