[33] At a single time distinctive info collection approaches and standards had been Utilized in amassing hydrographic data for maritime security and for scientific or engineering bathymetric charts, but progressively, While using the help of enhanced assortment strategies and Pc processing, the data is collected below one particular common and extr

Early hydrographic surveys consisted of depths measured by sounding pole and hand direct line, with positions based on a few-position sextant fixes to mapped reference points. Direct lines had been ropes, or strains, with depth markings and lead weights connected.four.1.two Multi-Beam Echo Sounder (MBES) Currently, MBES technology is extensively us