[33] At one time various data assortment techniques and requirements had been Utilized in gathering hydrographic info for maritime protection and for scientific or engineering bathymetric charts, but progressively, While using the help of enhanced assortment procedures and Pc processing, the data is collected below a single regular and extracted https://hydrographicsurvey32086.ivasdesign.com/54151777/5-essential-elements-for-hydrographic-survey-in-bangladesh