Marport’s NHT Hydrophones are the crucial conduits that detect the signals from gear-mounted sensors. For full coverage under all conditions, we recommend that port and starboard hydrophones are used to ensure uninterrupted reception. We offer both towed paravane hydrophone and hull mounted versions for trawl and seine use. Our hydrophones are designed with dimensions to make them direct replacements for standard industry units, and we offer a comprehensive range of hydrophone types and configurations with passive and active options to meet virtually any requirement the fishing industry can throw at us.