THE 5-SECOND TRICK FOR HYDROGRAPHIC SURVEY IN DHAKA

Hydrographic survey vessels make use of both equally a multibeam sonar and towed facet scan sonar to map The ocean flooring. Hydrographic Survey InformationThe rise of recent electronic technologies – sidescan sonar and multibeam swath methods – inside the fifties, nineteen sixties and 1970s eventually produced the wire-drag method out of date.