A REVIEW OF HYDROGRAPHIC SURVEY IN DHAKA

Hydrographic survey vessels utilize both a multibeam sonar and towed side scan sonar to map the sea flooring. Hydrographic Survey InformationThe increase of recent Digital systems – sidescan sonar and multibeam swath methods – during the nineteen fifties, sixties and seventies eventually produced the wire-drag method obsolete. Sidescan sonar co