Marine Radar Antenna: What It Is and Why It Matters

A Onwa Marine Radar antenna is integral to such a system-the device responsible for broadcasting and receiving radio waves to observe targets such as vessels, obstacles, land masses, and weather formations around it. An antenna mounted high up on a boat or ship's mast or radar arch helps a captain have situational awareness in low visibility, fog, or at night.

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Most marine radar antennas rotate continuously, sweeping a beam of radio energy across the horizon. When these transmitted waves hit an object, such as another boat or coastline, they bounce back to the antenna.

Types of Marine Radar antennas may include:

Open array antennas: Larger, professional-grade units with longer range and better target resolution — ideal for commercial vessels.

Radome (closed) antennas - compact, weather-protected units normally used on yachts and pleasure craft for general navigation.

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Proper installation height, clear line of sight, and correct configuration of your marine radar antenna are very important for its reliable performance. In turn, a well-set radar antenna means improved safety, fewer accidents, or even the capability to avoid collision and confidence when navigating busy waterways or adverse conditions.