Drift Measuring Instrument

Drift Measuring Instrument

An instrument used to measure the drift of a vessel or drifting object on the water relative to the geographical location of a selected reference point due to wind direction, current, and tide.

There are many ways to measure drift. One of them is to use a bottom-mounted sonar sunk to the bottom of the water as a selected reference point. At the same time, a transponder is installed on the drifting object. Using the transponder method, the relative distance between the two is continuously measured, thereby measuring the drift of the floating object relative to the reference point.