Airmar DST800L-235-N2 235kHz Bronze Thru-Hull - Long Stem - NMEA 2000

The Airmar DST800L-235-N2 235kHz Bronze Thru-Hull with Long Stem and NMEA 2000 connectivity is a smart triducer multi-sensor that consolidates depth, speed, and temperature measurement into a single compact thru-hull installation. Instead of drilling multiple holes through the hull and mounting separate transducers, this all-in-one design delivers depth sounder data, through-water speed, and temperature readings to your chartplotter, radar display, or digital instrumentation through a single NMEA 2000 network connection.

The 235kHz frequency provides the balance between range and resolution that experienced boaters expect—precise bottom tracking for shallow to moderate depths while maintaining reliable performance in varied water conditions. The long-stem bronze thru-hull construction is purpose-built for saltwater environments, where standard materials corrode rapidly. Bronze resists galvanic corrosion better than aluminum or stainless steel in immersed saltwater applications, making it the standard choice for serious offshore and coastal fishing vessels. Digital signal processing integrated into the housing means cleaner, more stable sounder readings with less electromagnetic noise compared to older analog transducers.

Weekend anglers appreciate the simplified installation—one hull penetration instead of three—and the reduced wiring complexity of a networked sensor. Serious offshore operators benefit from real-time speed and temperature data critical for optimizing trolling patterns, detecting thermoclines, and tracking water mass changes during blue-water fishing. The NMEA 2000 standard ensures compatibility with modern Garmin, Raymarine, Furuno, and other network-capable chartplotters and displays currently in use on fishing and cruising vessels.