Hydrographic Survey over or Bathymetric Survey is an overview of physical attributes present underwater. It is the investigation of estimating all elements underneath the water that influence all the marine exercises like digging, marine developments, Offshore drilling and so forth. Hydrographic surveys are used to determine shoreline and underwater characteristics.

Hydrographic survey is primarily directed by power concerns. It is for the most part done by methods for sensors, sounding or electronic sensor framework for shallow water. The data acquired from hydrographic surveying is required to raise nautical diagrams which include Accessible Depths, Piers,Enhanced Channels, The guides to steer harbor facility, Breakwaters