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The Garmin GT12M-THF (12-degree Tilt) is a specialized 350-watt thru-hull transducer designed for midsize fishing and cruising vessels. It features a low-profile bronze housing that mounts flush to the hull, significantly reducing drag and turbulence compared to traditional external transducers.
This model utilizes Mid-band CHIRP technology, which provides a balanced frequency range (85-165 kHz). This allows for exceptional target separation and clear fish arches in both shallow and moderately deep waters.
12-Degree Tilted Element: Specifically engineered for boat hulls with a deadrise angle between 8° and 15°. This ensures the sonar beam points straight down without needing a fairing block.
Mid-Band CHIRP: Offers a perfect middle ground for sonar performance, delivering crisp detail for finding fish holding tight to the bottom or structure.
Flush-Mount Bronze Design: Durable and streamlined, this housing is ideal for fiberglass or wood hulls and helps maintain boat speed and fuel efficiency by minimizing drag.
Auto-ID Technology: Includes Garmin’s plug-and-play identification, allowing your chartplotter to automatically recognize the transducer and configure the correct sonar settings.
RapidReturn™ Sonar: Optimized for faster update rates, providing more real-time visual feedback on your screen.
| Feature | Specification |
| Manufacturer | Garmin |
| Part Number | 010-02867-01 |
| Sonar Type | Traditional CHIRP (Mid-Band) |
| Frequency Range | 85–165 kHz |
| Transmit Power | 350 W |
| Beamwidth | 24° to 16° |
| Maximum Depth | 1,200 ft (Freshwater) / 800 ft (Saltwater) |
| Supported Deadrise | 8° to 15° (12-degree Tilt) |
| Connector Type | 8-pin |
| Cable Length | 50 ft (15 m) |
| Housing Material | Bronze |
| Sensors | Depth and Fast-response Temperature |
Optimized Performance: Designed for reduced drag and high-resolution sonar returns, clearly defining fish targets and structure even at higher speeds.
Auto-ID Technology: Enables compatible Garmin chartplotters to automatically recognize and configure the transducer for simple plug-and-play operation.
RapidReturn™ Sonar: Fully compatible with faster update rates to provide more immediate visual feedback on the display.
Hull Material Compatibility: Ideal for installation on fiberglass, composite, and wooden hulls.
Mounting Hole: Requires a 25 mm (1 in.) spade bit or hole saw for fiberglass hulls.
Perpendicular Drilling: Anti-rotation bolt holes must be drilled perpendicular to the water surface using a 9 mm (3/8 in.) bit.
Anti-Rotation: The device must be installed with at least one included anti-rotation bolt to prevent rotation while the boat is in motion.
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