Near bottom MBES survey mounted on a HOV at 5500m depth

As the alternate survey protocol for AUV-ROV sequential focused geological survey in great water depth, HOV mounted MBES survey followed by the geological observation and sampling was conducted. HOV mounted MBES provided a sub-meter scale high resolution bathymetric map, which efficiently supported the geological observation and resolve down to one meter scale morphological features successfully. Further, a pre-gridded point clouds imagery contains detailed morphological information.