GMR™ 18 HD3

This compact 18-inch high-definition magnetron dome radar delivers powerful scanning performance while maintaining a low-profile, space-saving design that fits a wide range of cruising and fishing vessels. With 4 kW of output power and a maximum range of up to 36 nautical miles, it provides reliable target detection in rain, fog, and darkness, helping you navigate safely with better situational awareness on the water.

Using dual-radar support, each display on board can pull data from one of two radar sources, providing redundancy and flexible viewing options at the helm. Dynamic Auto Gain automatically adjusts signal strength to maintain clear target visibility, while Dynamic Sea Filter intelligently reduces sea clutter in calm, moderate, and rough conditions. Combined, these features ensure consistently sharp radar images across changing environments.

Radar overlay allows live radar data to appear directly on the chartplotter’s map page, making it easier to interpret targets relative to coastlines, channels, AIS vessels, and navigation markers. MARPA target tracking helps monitor moving vessels around you, displaying their course, speed, and potential collision risk to support safer navigation in busy marine areas.

The unit’s quiet dome drive motor operates smoothly and discreetly, even during long-running scans or trolling speeds. Whether you're navigating through fog, traveling at night, or operating in crowded harbors, this radar system delivers clarity, range, and confidence for cruisers, charter operators, and serious coastal anglers.