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Garmin GSD 21 Sounder Module
*Transducer sold separately

Discounts Available

Garmin MArine Products
GSD-21 Sounder Transducers

Add depth to your chartplotter view with the GSD™ 20 series remote sounders. The GSD 21, is a powerful analog sounder unit designed to operate with stand-alone chartplotters or integrate with the Garmin CANet™ and Marine Networks.

The GSD 21 is a black-box sounder that provides fast Ultrascroll™ displays and 500-watt (RMS) sounder capability to 2000 series and 292/392/492 series chartplotters featuring the Garmin CANet™ bus. The GSD 21 will work with a serial connection to other Garmin plotters without the CANet connection, but will not offer Ultrascroll™ capability. The unit’s all-new, high-dynamic range analog sonar receiver provides exceptional performance in water as shallow as one foot on down to depths of 1,500 feet. It connects to a dual frequency transducer (50/200 kHz) for deep-water performance or a single frequency, dual beam width transducer (narrow/wide) for operation in shallow freshwater as well as deeper water. Provides 500 W transmit power with dual frequency transducer or 400 W with dual beam width transducer.

Works with the following Garmin units: 292, 392, 492, 2100 series, 2200 series, 3000 series and 3200 series.


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Performance Yacht Systems
919 Bay Ridge Road
Annapolis, MD  21403

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