Definition
A fathometer, also known as an echo sounder, is an instrument used to measure the depth of water. π It works by transmitting sound pulses from a vessel and measuring the time it takes for the echo to return from the seabed. The time interval is then converted into a depth reading. It's like a ruler for the ocean floor! π Fathometers are essential tools for navigation, surveying, and creating nautical charts. They help ships avoid running aground and assist in mapping underwater terrain.