The Garmin GT15M-IH delivers powerful mid-band CHIRP sonar performance from inside your boat’s hull, offering superior target separation, depth accuracy, and durability—perfect for fiberglass boats that can’t support through-hull mounting.

Garmin GT15M-IH In-Hull CHIRP Transducer Description

The GT15M-IH in-hull transducer is designed for fiberglass boats and delivers mid-band CHIRP sonar clarity without hull penetration. Offering crystal-clear target separation, wide coverage, and dependable performance at depth and speed, it’s the perfect solution for anglers seeking accurate sonar readings without external mounting hassles.

Ideal for Fiberglass Hulls

Specially engineered for solid fiberglass hulls, the GT15M-IH ensures strong sonar signal transmission without requiring holes in the hull, maintaining the integrity of your boat.

Mid-Band CHIRP Performance

Operating between 85–165 kHz, it delivers sharp, high-contrast sonar images, offering better target separation and detail in moderate-depth fishing environments.

Reliable In-Hull Installation

The in-hull design eliminates drag and protects the transducer from damage while ensuring consistent sonar readings, even at high speeds.

Broad Coverage and Depth Accuracy

Its wide beam provides broad underwater coverage and accurate depth readings, making it ideal for inland and nearshore fishing.

Durable and Easy to Install

Constructed with marine-grade materials and supplied with installation hardware, the GT15M-IH ensures a simple setup and long-lasting durability.

Compatible with Garmin Chartplotters

Seamlessly integrates with Garmin CHIRP sonar-enabled chartplotters for enhanced fishfinding precision and performance.

Garmin GT15M-IH In-Hull CHIRP Transducer - Key Features

Mid-Band CHIRP Clarity

Offers detailed sonar imagery and improved target distinction, allowing anglers to easily identify fish and structures at medium depths.

In-Hull Mount Design

Mounts securely inside the hull, eliminating drag and protecting the transducer from underwater obstacles or damage.

Excellent Depth Capability

Capable of reaching depths up to 1,900 ft (579 m), making it suitable for both inland and coastal fishing.

Wide Beam for Broader Coverage

Covers a beamwidth of 24°–13°, allowing wide underwater scanning and more precise target tracking.

Durable Construction

Built for long-term reliability, the GT15M-IH withstands pressure, vibration, and temperature variations without compromising performance.

Plug-and-Play Garmin Compatibility

Easily connects to Garmin chartplotters and fishfinders with an 8-pin connector for immediate use.

Garmin GT15M-IH In-Hull CHIRP Transducer – What Is In The Box

• GT15M-IH transducer
• 4 plastic tanks
• Mounting hardware
• Documentation

Garmin GT15M-IH In-Hull CHIRP Transducer - Specifications

General Features