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Not known Factual Statements About Hydrographic Survey in Bangladesh

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Early hydrographic surveys consisted of depths calculated by sounding pole and hand guide line, with positions based on 3-level sextant fixes to mapped reference details. Direct traces ended up ropes, or traces, with depth markings and direct weights attached. The increase of new electronic systems – sidescan sonar and multibeam https://mylesixjvd.ambien-blog.com/38679226/5-simple-statements-about-hydrographic-survey-in-bangladesh-explained

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