If the wire (established at a particular depth by a program of weights and buoys) encountered an obstruction, it would come to be taut and sort a "V," revealing the depth and situation of submerged rocks together with other obstructions. These charts involve historic functions, such as LORAN-C lines. Hydrographic https://claytonvdkty.anchor-blog.com/12496354/the-definitive-guide-to-hydrographic-survey-in-dhaka