Hydrographic surveys are scientific studies that measure and describe the physical features of bodies of water, such as oceans, rivers, and lakes. These surveys collect data on water depth, tides, currents, and underwater topography, which is essential for navigation, construction, and environmental management. The information gathered from hydrographic surveys is used by various sectors, including shipping, fishing, and coastal development. Accurate data helps ensure safe navigation for vessels, supports sustainable resource management, and aids in the planning of infrastructure projects like bridges and dams.