Garmin

Garmin GT30-TH SS Thru-Hull DownVü/SideVü Scanning Transducer w/Temp f/Hull Deadrises Less Than 5°

SKU: 59890 · UPC: 753759152802 · MPN: 010-01961-10
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02 · Overview

Garmin GT30-TH SS Thru-Hull DownVü/SideVü Scanning Transducer w/Temp f/Hull Deadrises Less Than 5° — Product description

GT30-TH, Transducer, 12pin, DownVü and SideVü frequency: 455/800, New Design

Discover the power of precise underwater imaging with the Garmin GT30-TH stainless steel thru-hull transducer, designed specifically for boats with hull deadrises up to 25 degrees. This robust 12-pin scanning sonar unit excels in shallow waters, delivering crystal-clear views of fish, structure, and bottom contours both directly below and to the sides of your vessel. Whether you're chasing trophy bass in skinny water or mapping reefs for offshore adventures, its CHIRP ClearVü and SideVü technology paints a vivid picture that helps you pinpoint targets with confidence.

Why Choose the GT30-TH for Your Next Fishing Trip?

Built with a durable stainless steel stem, this transducer withstands the harsh marine environment while maintaining peak performance. The integrated fast-response temperature sensor provides real-time water temp data, essential for locating baitfish schools and understanding thermoclines. Anglers love how it consistently reveals separated fish arches, bait balls, and submerged hazards—even in murky or shallow conditions where traditional sonar falls short.

  • Shallow Water Specialist: Optimized for deadrises from 0 to 25 degrees, ideal for planing hulls and flats boats.
  • Exceptional Clarity: CHIRP frequencies at 455 kHz (425-485 kHz) and 800 kHz (790-850 kHz) offer razor-sharp resolution.
  • Impressive Range: Reach depths up to 750 feet for ClearVü and 500 feet left/right for SideVü scanning.
  • Powerhouse Performance: 500 watts per element (1,500 watts total) ensures strong signals in challenging conditions.

Key Technical Specifications

Specification Details
Mounting Type Thru-Hull
Connector 12-Pin
Power Rating 500W per element (ClearVü/SideVü)
Frequency (CHIRP) 455 kHz (425-485 kHz) & 800 kHz (790-850 kHz)
Max Depth ClearVü: 750 ft; SideVü: 500 ft (L/R)
Beamwidth ClearVü: 1.4° x 53° @ 455 kHz, 0.8° x 30° @ 800 kHz
SideVü: 1.1° x 53° @ 455 kHz, 0.7° x 30° @ 800 kHz
Cable Length 5 ft + 30 ft extension
Supported Deadrise 0° to 25°
Sensors Depth & Temperature

What's Included for Seamless Setup

Everything you need for a professional installation comes in the box: the transducer with stainless steel stem, fairing block for optimal water flow, isolation plate and bushings to reduce vibration, a 30-foot extension cable, plus all mounting hardware. Pro tip: Position the transducer forward of the prop and keel line for minimal interference, and ensure the fairing block matches your hull's deadrise angle for the best signal quality.

Real-World Benefits for Anglers

Imagine idling over a flat, spotting a school of redfish hugging a grass edge 100 feet to port— that's the GT30-TH in action. Its wide SideVü coverage (up to 500 feet per side) combined with narrow fore/aft beams gives you photo-like detail without the guesswork. The stainless steel construction resists corrosion, making it a long-term investment for serious offshore and inshore pursuits. Pair it with Garmin's GCV 10 black box for plug-and-play integration with compatible chartplotters.

Frequently Asked Questions

What hull types is the Garmin GT30-TH transducer best suited for?

It's optimized for hull deadrises between 0 and 25 degrees, making it perfect for most planing hulls, bass boats, and center consoles commonly used in shallow water fishing.

Does this transducer measure water temperature?

Yes, it features a built-in fast-response temperature sensor that delivers accurate, real-time readings to help track fish movement patterns.

What's the difference between ClearVü and SideVü scanning?

ClearVü provides down-facing imagery like a live underwater video directly beneath your boat, while SideVü scans up to 500 feet to each side, revealing structure and fish off to the port and starboard.

How deep can the GT30-TH scan?

It reaches up to 750 feet with ClearVü for downward scans and 500 feet left/right with SideVü, though performance shines brightest in shallower depths under 200 feet.

Is professional installation required?

DIY installation is feasible with the included hardware and instructions, but consulting a marine electrician ensures proper thru-hull placement to avoid leaks or signal loss.

What makes the stainless steel stem advantageous?

The stainless steel stem offers superior corrosion resistance in saltwater, vibration dampening, and longevity compared to plastic alternatives, ideal for rugged marine use.

Can I use this with other Garmin sonar modules?

It's primarily paired with the GCV 10 scanning sonar module via its 12-pin connector for optimal CHIRP ClearVü and SideVü performance.

Garmin make products that are engineered on the inside for life on the outside. We bring GPS navigation and wearable technology to the automotive, aviation, marine, outdoor and fitness markets. We believe every day is an opportunity to innovate and a chance to beat yesterday. We offer products with essential utility, leading-edge technologies, compelling features, and exceptional ease-of-use to create clear differentiators our customers appreciate and desire.

Garmin 100196110 Attributes

  • Mounting Location: Thru-Hull Mount
  • Number Of Pins: 12 Pin
  • Depth: 750 Feet For Traditional And 500 Feet For SideVü
  • Power Rating: 500 Watt
  • Frequency Range: 445 kHz And 800 kHz For ClearVü/SideVü CHIRP Operating Frequency
  • Supported Angle: 0 To 25 Degree Deadrise
  • Cable Length: 5 Feet

Garmin 100196110 Features & Benefits

  • Perfect For The Shallow Water Fishermen Who Want Traditional And CHIRP ClearVu Scanning Sonar With A Stainless Steel Stem
  • 12-Pin Thru-Hull Transducer Consistently Displays Clear Definition Of Objects, Structure And Fish Below And To Each Side Of The Boat
  • Transducer With Built-In Fast Response Temperature Sensor Has A Power Rating Of 500 Watt Per Element
  • Provides Transducer With Stainless Steel Stem, Fairing Block, Isolation Plate And Bushings, Extension Cable, Mounting Hardware And Installation Instructions
  • Limited 2 Year Warranty

Garmin 100196110 Installation Instructions

Garmin 100196110 Warranties


Garmin GT30-TH - Stainless Steel Thru-hull DownVü/SideVü 500W (CHIRP 455/800 kHz) Scanning Transducer with Temp, for Hull Deadrises Less Than 5° (12-pin)

Get ultra-clear sonar pictures of objects, structure and fish that pass below and to the side of your boat with this 12-pin thru-hull transducer with stainless steel stem.

This transducer with built-in fast response temperature sensor has a power rating of 500 W per element (1,500 W total); a depth of 750 ft (DownVü) and 500 ft left and right (SideVü) an operating frequency of CHIRP 455/800 kHz; for hull deadrises less than 5 degrees. Pair it with your GCV™ 10 scanning sonar module.

Includes transducer with stainless steel stem, fairing block, isolation plate and bushings, extension cable, mounting hardware and installation instructions. Follow the instructions carefully to avoid damaging your boat.

Compatible Devices:
  • GCV™ 10 Scanning Sonar Module


This 12-pin threaded hull sensor with a stainless steel rod can acquire ultra-clear sonar images to understand the sound of objects under objects, structures and fish passing under and from the side of the ship. This ...
SKU: NVN-59890
MPN: 010-01961-10
UPC: 753759152802
03 · The numbers

Technical specifications

BrandGarmin
ModelGarmin GT30-TH SS Thru-Hull DownVü/SideVü Scanning Transducer w/Temp f/Hull Deadrises Less Than 5°
SKU / MFR#59890

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04 · Before you buy

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05 · Customer voices

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