Reliable and Affordable 36NM Dome Radar
The Garmin GMR18 HD+ Dome Radar delivers clearer and more defined images to your compatible Garmin chartplotter to enhance situational awareness than previous versions. The GMR 18HD+ has self-contained signal processing that provides the ideal “plug-and-play” addition to your Garmin Marine Network. An aid in hazard avoidance, MARPA target tracking is also supported (with optional heading sensor).
Dynamic sea filter and auto gain adjustments are made automatically within the radar adjusting itself to the current sea conditions providing you with the utmost performance at a low price. 4kw transmitting power allows the GMR 18HD+ to reach up to 36 nautical miles of scanning range and provide clear radar images. The Garmin GMR 18HD+ is the perfect entry level radar that won’t break the bank, but also offers outstanding performance.
- Garmin GMR 18 HD+ Dome Radar
- Mounting Hardware Kit and Template
- 15M Power and Network Cable
- Documentation
- Two-Year Warranty
- Size: 20"Diameter x 9.8” Height
- 20 Meter - 36 Nautical Mile Range
- Radar Overlay
- Dynamic Auto Gain
- 4kW Transmit Power
- Affordable Radar with Good Performance
Product Accessories for Garmin GMR 18 HD+ Dome Radar

Seaview 5" Modular Radar Mount and Plate Bundle - Forward
The Seaview Radar Mount with Mounting Plate is not only stylish but also very sturdy and works on most radar domes. A list of compatible domes is below.

Garmin Marine Network Cable Connector (Pair)
The Garmin Marine Network Cable Connector gives you the ability to wire on the connector after you have run the cable through your boat. Sold in a pack of two.

Seaview 5" Modular Radar Mount and Plate Bundle - Aft
The Seaview Radar Mount with Mounting Plate is not only stylish but also very sturdy and works on most radar domes. A list of compatible domes is below.
*Aft Raked Mount

Seaview Radar Mast Mount
The Seaview Mast Mount provides a very sturdy platform for your compatible radar.
Similar Products and Value Bundles
Garmin GMR 24xHD High-Definition Radar Dome
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- ID#: 3925
$1,829.00 On Sale