Bathymetry is the study of underwater depth of lake or ocean floors. In other words, bathymetry is the underwater equivalent to hypsometry or topography.
Sides Scan Surveys
Side scan imaging surveys use sonar to efficiently create a precise acoustic image of large areas of the seafloor.
Sub-bottom profile surveys
Sub-bottom profiling systems identify and measure various marine sediment layers that exist below the sediment/water interface
Magneto meter surveys
Magnetometer surveys are used in a variety of fields and are particularly well suited to the detection and mapping of all sizes of ferrous objects including anchors, chains, cables, pipelines, ballast and other scattered shipwreck debris, munitions (UXO), aircraft, engines, and any other magnetic objects.