THE 5-SECOND TRICK FOR HYDROGRAPHIC SURVEY IN DHAKA

Should the wire (set at a particular depth by a procedure of weights and buoys) encountered an obstruction, it would grow to be taut and sort a "V," revealing the depth and place of submerged rocks and also other obstructions.The coastal space of Bangladesh may be very shallow and indented in mother nature. Many of the inshore places are inaccessib