Preconstruction site survey

For the design of offshore constructions it is necessary to have information regarding the seafloor and subsurface structure, such as bathymetry, side-scan sonar images, seabed classification, magnetic anomalies and subsurface structure and lithology. The Sub–bottom profiler provides valuable information regarding the sub–seafloor structure, gases in sediments and hard bottoms where digging is hard to do. Sediment thickness maps and sediment volume calculations are derived from this type of data.