Current pole

{
  "id": "MLC-T-MET-004812",
  "term": "Current pole",
  "field": "Meteorology and atmospheric science",
  "definition": "A simple device used to measure the speed and direction of surface water currents. It consists of a weighted pole, designed to float vertically with most of its length submerged, minimizing the effect of wind. By observing the pole's drift relative to a fixed point or a vessel over a measured period, an observer can calculate the velocity of the near-surface current.",
  "url": "https://mlchart.com/terminology/meteorology/current-pole/"
}