THE DEFINITIVE GUIDE TO HYDROGRAPHIC SURVEY IN DHAKA

If your wire (set at a specific depth by a program of weights and buoys) encountered an obstruction, it might turn out to be taut and kind a "V," revealing the depth and situation of submerged rocks as well as other obstructions.NOAA utilizes USCG-managed differential GPS beacons to Increase the precision of placement measurements. Having said that