In either circumstance, the depths calculated had to be browse manually and recorded, as did the situation of every measurement regarding mapped reference points as based on three-level sextant fixes. The method was labor-intensive and time-consuming and, Despite the fact that Every unique depth measurement could be precise, even an https://hydrographicsurveyinbangl06024.blogitright.com/32575667/the-best-side-of-hydrographic-survey-in-dhaka