Choosing the right radar for a small boat means balancing range, update speed, footprint, and ease of use. This guide highlights five solid options that fit smaller vessels while delivering reliable collision avoidance, navigation, and weather awareness. Best for coastal days, day boats, and entry-level cruisers, these radars range from compact 20-inch domes to a robust 24-inch system. The summary table below helps you compare key specs quickly.
| Product | Best For | Key Strength | Limitations |
|---|---|---|---|
| Furuno 1815 8.4 Color LCD Radar 19″ Dome | Small to mid-size boats needing clear color display | Bright 8.4″ color LCD, 4 kW power, broad 19″ dome | Higher power asset; may require stable mounting space |
| Simrad HALO20+ 36 NM 20″ Dome | Boats needing fast updates and collision avoidance | 60 RPM, VelocityTrack, 36 NM coverage | Premium features at a compact size |
| Simrad GO9 XSE with HALO20 Radar | Integrated chartplotter and radar user | MFD with radar, preloaded charts, 83/200 transducer | All-in-one system; higher integration complexity |
| Lowrance Halo 20+ Radar | Budget-conscious buyers wanting 60 RPM and Doppler | 60 RPM, VelocityTrack, 2 NM range at full speed | Limited long-range emphasis |
| Simrad HALO24 Radar System | -Dayboats needing long-range detection | 60 RPM, 24 NM range, dual-range mode | Larger dome; footprint bigger than 20″ models |
Furuno 1815 8.4 Color LCD Radar 19″ Dome
The Furuno 1815 uses an 8.4-inch color LCD to present radar images clearly, paired with a 19-inch dome for comprehensive coverage. With a 4 kW transmitter, this model supports reliable detection in moderate sea states and near-shore conditions. Best for boaters who value a bright, color display and a straightforward radar setup. Potential users should note that larger spaces may help optimize antenna effectiveness, and power needs should align with mounting and power supply capabilities.
Simrad HALO20+ 36 NM 20-inch Dome Radar
The HALO20+ delivers an almost real-time view with 60 RPM operation and VelocityTrack Doppler technology. It provides simultaneous short and long-range coverage up to 36 nautical miles using a compact 20-inch dome. This is a strong choice for boats that require robust collision avoidance and a quick situational picture in busy waters. Choose this if you want fast updates and advanced hazard detection; avoid if you need a larger, more traditional radar dome.
Simrad GO9 XSE Chartplotter and Fishfinder with HALO20 Radar
This option combines a multifunction display with radar capability, offering GPS navigation, sonar support, and system integration. Preloaded C‑MAP Discover charts provide enhanced mapping, while the 83/200 kHz HDI transducer supports clear CHIRP sonar and DownScan Imaging. Best for sportboats and center consoles that want an all-in-one navigation and radar suite. A potential limitation is the overall system complexity and setup required for optimal performance.
Simrad GO9 XSE Chartplotter and Fishfinder with HALO20 Radar (Variant)
Another GO9 XSE configuration emphasizes the same core strengths: integrated navigation, radar, and high-quality charts. This variant is best for buyers who want a robust command center to manage radar overlays with chart data. It’s better for those who need comprehensive coastal charts and CHIRP sonar within a single interface. Choose this if you prioritize chart depth and data layering; a note is that it may require careful calibration for optimal radar overlay accuracy.
Simrad HALO20 Radar System, 24 Nautical Mile Range
HALO20 Compact 20-inch dome radar with a 24 NM detection range offers reliable near- and mid-range visibility. Its advanced pulse compression delivers sharp target definition, aiding with hazard detection in coastal or busy waterways. Best for smaller boats seeking a balance of performance and space. A limitation to note is that this model emphasizes near and mid-range targets; long-range detection is more modest compared to higher-end, larger domes.
Simrad HALO24 Radar System
The HALO24 system uses a 24-inch dome to deliver near, mid, and long-range detection with a 60 RPM rotation. Dual Range mode allows simultaneous viewing of far weather cells and close hazards, while VelocityTrack provides instant tracking feedback. Best for dayboats and weekend cruisers that need strong long-range recognition. A caution: the larger dome footprint may require more mounting space and power considerations.
Buying Guide
What should you look for when buying radar for a small boat?
- Range vs. update speed: If you boat in busy coastal waters, prioritize faster rotation (60 RPM) and Doppler tracking for closer hazards.
- Display and integration: Consider whether you want a standalone radar or an all-in-one system with a chartplotter and sonar (GO9 XSE variants).
- Power and footprint: Larger domes provide longer detection but require space and power; smaller domes fit tight cabins but may have shorter range.
- Weather and sea state: Higher power and dual-range capabilities help in poor weather; ensure your vessel’s power system can support it.
- Ease of installation and calibration: Some models are plug-and-play, while others need more complex setup and calibration for best performance.
Frequently Asked Questions
- What radar is best for a small fishing boat?
HalO20+ or Halo20 models offer fast updates and reliable collision avoidance, with compact domes suited to smaller vessels.
- Is a standalone radar better than an all-in-one system for a small boat?
Standalone radars excel at radar performance, while all-in-one systems provide navigation and sonar integration in one interface; choose based on whether you want simplicity or expandability.
- What does Doppler technology do on marine radars?
VelocityTrack Doppler helps distinguish whether targets are approaching or moving away, improving hazard identification.
- How important is beam sharpening and pulse compression?
Beam sharpening and pulse compression improve target clarity at both near and far ranges, which is essential in busy waters.
- Do I need long-range radar for coastal cruising?
Longer-range radars are beneficial for open-water cruising or high-traffic coastal routes, but may be overkill for sheltered bays.
- Can these systems integrate with charts and sonar?
Many options, such as GO9 XSE configurations, integrate charting and sonar; confirm compatibility with your transducer and charts.