HYDROGRAPHY SURVEY

Hydrography deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time.
Equipment used in hydrography survey are :

• Echosounder singlebeam and multibeam – Side scan sonar
• Sub-bottom profiler
• Sound velocity profiler
• Acoustic Doppler Current Profiler (ADCP)
• Drone or UAV can be used to combined with sea survey data result.

What is hydrography survey product ?

• Hydrography map : presents seabed contour, under water and sea surface feature
• Oceanography and tidal data
• Seabed surface 3D model
  – Coastal map
  Hydrography survey data is used for :
  – Support of all other marine activities, especially safety of navigation – Dredging data, sedimentation monitoring
  – Investigation for sinking ship or rescue mission
  – Planning for build an offshore platform
  Data survey result also can be used to planning , analysis, and design other engineering purposes like platform installment.