In possibly circumstance, the depths calculated had to be go through manually and recorded, as did the place of each measurement with regards to mapped reference factors as based on a few-level sextant fixes. The process was labor-intense and time-consuming and, Even though Just about every individual depth measurement can https://hydrographic-survey-in-dh78986.widblog.com/87450804/not-known-factual-statements-about-hydrographic-survey-in-bangladesh