Not known Factual Statements About Hydrographic Survey in Bangladesh
If the wire (established at a specific depth by a system of weights and buoys) encountered an obstruction, it could turn into taut and variety a "V," revealing the depth and position of submerged rocks as well as other obstructions.The rise of latest electronic technologies – sidescan sonar and multibeam swath programs – in the 1950s, 1960s and