Seabed mapping survey enables the topography of the seafloor to be examined for wrecks, manmade artifacts, debris, current infrastructure, and other points of interest. This ensures that pipes and cables are not laid in potentially hazardous areas. The composition of the seabed can also be determined for burial and trenching evaluation. Side Scan Sonars or Multibeam Echosounders are predominantly used to obtain the data required to produce high quality Digital Terrain Models (DTM’s).