Chip log

{
  "id": "MLC-T-MET-010429",
  "term": "Chip log",
  "field": "Meteorology and atmospheric science",
  "definition": "A historical nautical instrument for measuring a vessel's speed through water, providing data for early marine weather observations. It consisted of a weighted wood panel (the chip) attached to a line with knots tied at regular intervals. The number of knots that unspooled over a specific time, measured by a sandglass, indicated the ship's speed in the unit of knots, where one knot equals one nautical mile per hour.",
  "url": "https://mlchart.com/terminology/meteorology/chip-log/"
}