Surveying-Hydrography

• Establishment of coastal control points from the geodetic network
• Determining the horizontal position of the hydrographic float
• Determine the depth

Hydrography not only deals with the preparation of water bed maps, including seas and oceans, water reservoirs, and rivers; It also deals with the study of water currents, changes in water levels, physical properties of water such as heat and salinity, and so on. Thus, there is a close relationship between hydrographic engineers, oceanographers, and hydrologists. A variety of equipment such as echo sounders, sonar, and positioning systems on the surface and underwater are hydrographic tools.

Hydrographic operations are all operations that are performed to obtain the depth of the water surface and the topography of the floor of the area, which in the past was performed by a boat and a depth finder, but now with the advancement of various sciences, the necessary equipment has changed and many It has overcome the challenges of the past.