FACTS ABOUT HYDROGRAPHIC SURVEY IN DHAKA REVEALED

Hydrographic survey vessels use both of those a multibeam sonar and towed facet scan sonar to map the sea ground. Hydrographic Survey FactsThe rise of recent Digital technologies – sidescan sonar and multibeam swath units – while in the nineteen fifties, 1960s and seventies inevitably designed the wire-drag program obsolete. Sidescan sonar coul