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Garmin GSD 24 Digital Black Box Network Sounder

The GSD 24 features a vastly improved digital sonar design for superior target definition and deep-water performance.

Get the Whole Picture

With up to 2,000 Watts of transmit power and a high-dynamic range receiver, the GSD 24 brings high-definition imaging to your compatible Garmin chartplotter. The system is dual frequency (50/200 kHz) capable and offers selectable transmit power (600 W, 1 kW and 2 kW, depending on transducer) for pin-point accuracy at depths of up to 5,000 ft (1,500 m). So whether you’re out sportfishing or just keeping an eye on hazardous terrain and reef structures beneath your boat, you’ll see a clearer picture with enhanced separation of images and deeper bottom detection.

Plug and Play

Thanks to the easy connectivity of the Garmin Marine Network, installation of the GSD 24 is a snap. Once connected, your sonar data will be shared on any compatible chartplotter on the network. Plus, the network's high-speed connections ensure that you get ultra-fast screen updates with minimal delay.

GSD 24: See what you’ve been missing.


  • Material: Fully gasketed, aluminum and steel housing
  • Unit dimensions, LxWxH: 8"×11.2"×3.2" (204 mm × 284 mm × 81 mm)
  • Weight: 5.27 lbs (2.39 kg)
  • Waterproof: yes (IPX7)
  • Temperature range: From 5°F to 158°F (from -15°C to 70°C)
  • Power Input: 10-35 V
  • Power Usage: 40 W maximum
  • Fuse: 7.5 A
  • Compass safe distance: 15.75 in. (40 cm)
  • Sounder power: 25-2,000 W rms¹
  • Frequency: 50/200 kHz
  • Depth: 5,000 ft. (1,524 m)²
  • Data output: Garmin Marine Network

¹dependent on transducer rating and depth

²maximum depth, dependent on transducer, water salinity, bottom type and other water conditions

Please Note: This product does not include a transducer. Garmin offers a complete selection of transducers to be purchased separately as accessories.

Compatibility: The GSD 24 is compatible with 4000, 5000, 6000 and 7000 series chartplotters. Click here for a complete list of compatible marine units.

Installation Instructions: Click here (pdf)
GSD 24 Transducer Adapter Installation Instructions: Click here (pdf)


unit's accessories button

Garmin GSD 24 Black Box Sounder

In the box :
• GSD 24
• Power cable
• Marine network cable (6 ft)
• Mounting hardware
• 8-pin Female to wire block adapter
• software update SD card
• Documentation


Garmin GSD 24 screen shot

Garmin GSD 24 screen shot

Garmin GSD 24 screen shot

GSD 24 Digital Black Box Network Remote Sounder
(Transducer not included)

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