Dredging activities have the purpose of removing unwanted bottom sediments and their disposal at a different location. A good bathymetry study is necessary for a successful planning of future dredging works and is also important for monitoring the related evolution and modifications. The comparison of bathymetrical grids prior and after dredging can help monitoring the real volume of removed material, being a useful tool for assessing the total volume of dredging works.
Sub-bottom profiling is a valuable addition for the understanding of the subsurface architecture of sedimentary bodies, including buried hard rocks that cannot be dredged and could prove a hazard for the dredging equipment.
