WHAT DOES HYDROGRAPHIC SURVEY IN BANGLADESH MEAN?

When the wire (established at a certain depth by a process of weights and buoys) encountered an obstruction, it would become taut and sort a "V," revealing the depth and place of submerged rocks and other obstructions.This island Positioned on the mouth from the Hariabhanga River near the India-Bangladesh border region, had a region of 2,500 m2 in