Single Beam Sonar is a technology used to measure the depth of water and map underwater features. It works by sending a single sound wave pulse from a transducer to the seabed. When the sound wave hits the bottom, it bounces back to the transducer, allowing the system to calculate the distance based on the time it takes for the echo to return. This method is commonly used in marine surveys, fishing, and navigation. While Single Beam Sonar provides accurate depth measurements, it captures data in a narrow path, making it less effective for detailed mapping compared to Multi-Beam Sonar, which uses multiple beams for wider coverage.