In the event the wire (set at a certain depth by a program of weights and buoys) encountered an obstruction, it will grow to be taut and sort a "V," revealing the depth and position of submerged rocks together with other obstructions. Horizontal positions (latitude and longitude) are recorded using https://johnathanblveg.blogofoto.com/63670614/considerations-to-know-about-hydrographic-survey-in-dhaka