THE SINGLE BEST STRATEGY TO USE FOR HYDROGRAPHIC SURVEY IN BANGLADESH

If the wire (set at a particular depth by a method of weights and buoys) encountered an obstruction, it would turn out to be taut and variety a "V," revealing the depth and placement of submerged rocks and various obstructions.The increase of recent Digital systems – sidescan sonar and multibeam swath units – within the fifties, nineteen sixtie