If the wire (set at a certain depth by a system of weights and buoys) encountered an obstruction, it could come to be taut and sort a "V," revealing the depth and posture of submerged rocks together with other obstructions. This issue was solved working with multi-beam sounders that captured https://hydrographic-survey62727.bloggerbags.com/37429053/top-hydrographic-survey-in-bangladesh-secrets