Introducing the SS538, a state-of-the-art stainless steel underwater transducer designed for Chirp technology, operating at 200 kHz. This device boasts remarkable sensitivity, making it ideal for precise surveying in shallow waters, rivers, harbors, and estuaries. It supports Chirp functionality with a long pulse across a broad frequency spectrum. Users equipped with adjustable-frequency echosounders can customize the operating frequency and adapt the beamwidth to meet specific survey requirements. Available frequency ranges include 80-130 kHz, 130-210 kHz, and 200 kHz.