Garmin ECHOMAP UHD2 64sv US Coastal and Great Lakes GN+ with GT54-TM Transducer

The Garmin ECHOMAP UHD2 64sv US Coastal and Great Lakes GN+ with GT54-TM Transducer is a professional-grade marine chartplotter engineered for serious saltwater and freshwater navigation. Originally developed for commercial fishing and coast guard operations, this 6-inch display combines real-time sonar imaging with integrated Navionics+ coastal charting to deliver situational awareness in demanding maritime environments. Law enforcement, search and rescue, and tactical water operations teams rely on this unit for precise target location, obstacle detection, and safe transit through complex coastal zones and inland waterways.

The ECHOMAP UHD2 64sv features a bright, sunlight-readable touchscreen display that performs in direct daylight and demanding field conditions where standard LCD screens fail. The GT54-TM transducer delivers ultra-high-definition sonar clarity through advanced beam-forming technology, enabling operators to distinguish subsurface targets and terrain composition with precision. Built-in Garmin Navionics+ charting integrates real-time bathymetric data, hazard alerts, and automatic tide corrections across US coastal and Great Lakes regions. The unit weighs 5.8 lbs, making it portable enough for mobile operations while maintaining the processing power required for simultaneous multi-frequency sonar operation and chart rendering.

This system is ideal for maritime law enforcement, emergency response teams, coastal security operations, and commercial vessel navigation where chart accuracy and real-time sonar data are mission-critical. The GT54-TM transducer mounts to vessel hulls via thru-hull or transom installation, offering flexibility across platform types from rigid-hulled inflatable boats to larger patrol craft. Operators benefit from integrated GPS/GNSS positioning, wireless networking capabilities for data sharing with command centers, and Garmin's extensive warranty and technical support infrastructure. Compatibility extends across Garmin's ecosystem of marine sensors, allowing users to expand the system with additional sonar modules, weather overlays, or autopilot integration as operational requirements evolve.