The Garmin GMR™ 18 xHD3 Dome delivers crystal-clear target definition, superior situational awareness, and exceptional range in a compact, durable design. Perfect for both recreational and commercial vessels. GMR 18 xHD3 Dome features advanced high-definition radar scanning, MARPA target tracking, dynamic auto gain, and a whisper-quiet motor for uninterrupted navigation. Designed for seamless Garmin marine network integration, the GMR™ 18 xHD3 ensures you have the ultimate radar performance in all weather and lighting conditions.

Garmin GMR™ 18 xHD3 18" Radome Marine Radar- Description

The Garmin GMR™ 18 xHD3 Dome offers high-definition radar imaging, improved target separation, and reliable performance, ensuring you navigate confidently in any marine environment, day or night. Whether you're navigating busy harbors or open seas, the xHD3 technology ensures you see clearly and instantly.

High-Definition Radar Imaging

Delivers crystal-clear images with enhanced target separation, making it easier to distinguish small vessels, buoys, and shoreline structures.

Compact, Space-Saving Dome Design

The 18-inch dome fits seamlessly on a variety of vessels, providing powerful radar performance without taking up excess space.

Improved Target Tracking

MARPA functionality allows tracking of multiple targets simultaneously, helping you avoid collisions and navigate crowded waters.

Dynamic Auto Gain

Automatically adjusts radar gain for optimal performance in varying conditions, reducing clutter while retaining important targets.

Whisper-Quiet Operation

Engineered for low-noise performance, allowing a peaceful onboard environment while the radar operates continuously.

Long-Range Performance

Covers up to 48 nautical miles, offering a wide field of view for early hazard detection.

Dual Range Mode

View short- and long-range radar images side-by-side to monitor immediate surroundings while scanning distant waters.

Weather Overlay

Integrates with compatible Garmin chartplotters to display weather patterns directly on your navigation screen.

Seamless Garmin Marine Network Integration

Connects effortlessly with other Garmin devices for a unified navigation and safety experience.

Durable, Marine-Grade Construction

Built to withstand harsh saltwater environments and extreme weather conditions for long-lasting reliability.

Garmin GMR™ 18 xHD3 18" Radome Marine Radar - Key Features

Advanced Target Separation

Improved clarity ensures distinct target identification even in congested areas like harbors and marinas.

True Motion Display

Shows moving targets in real time, improving situational awareness and safety.

Echo Trails

Leaves a fading trail of moving targets, making vessel movement direction easy to track.

Auto Bird Mode

Automatically optimizes radar settings to detect flocks of birds—often a sign of fish below.

Harbor and Offshore Modes

Adjusts performance automatically for the best results in close or distant navigation.

Rotation Speed Options

Selectable rotation speeds (24/48 RPM) allow for faster updates or extended range depending on your needs.

Guard Zone Alerts

Set custom zones to receive alerts when a target enters your predefined safety area.

Easy Plug-and-Play Installation

Quick setup with Garmin Marine Network cabling for minimal installation time.

Low Power Consumption

Efficient operation conserves onboard power, making it ideal for extended trips.

48 NM Range

Covers up to 48 nautical miles, providing long range visibility for offshore navigation and storm tracking.

Garmin GMR™ 18 xHD3 18" Radome Marine Radar - What Is In The Box

• GMR 18 or 24 xHD3 dome radar (depending on model selected)
• Power cable (15 m/49.21 ft)
• Network cable (15 m/49.21 ft)
• Mounting hardware kit and template
• Installation instructions

Garmin GMR™ 18 xHD3 18" Radome Marine Radar - Specifications

General

Electrical Features

Radar Features

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