CONSIDERATIONS TO KNOW ABOUT HYDROGRAPHIC SURVEY IN DHAKA

Considerations To Know About Hydrographic Survey in Dhaka

Early hydrographic surveys consisted of depths calculated by sounding pole and hand direct line, with positions based on 3-point sextant fixes to mapped reference points. Lead strains had been ropes, or lines, with depth markings and lead weights hooked up.Horizontal positions (latitude and longitude) are recorded working with Differential World-wi

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