radar

Dome or open array?

For most recreational boats up to about 15 meters, a radome is the more practical choice: enclosed housing, low maintenance, wind-permeable enough for the mast. Open arrays rotate faster, detect weak targets more precisely, and are better suited for larger vessels or professional use – but they are more sensitive to contamination and mechanical stress.

Realistically assess range and transmitting power

The stated maximum range applies under ideal conditions. For coastal cruising and harbor maneuvers, good resolution at close range is often more important than long range. Pay attention to how the device displays small targets such as buoys or wooden boats at close range – this is the decisive difference in everyday use.

Integration into the onboard system

Most modern radar systems can be connected to chartplotters and AIS via manufacturer networks or NMEA 2000. Radar overlay on the nautical chart is a real added value, but requires compatible displays. Before purchasing, clarify whether your existing plotter can natively display the radar image or if you need a dedicated radar display.

Installation and maintenance

The mounting location significantly influences performance: as high as possible, unobstructed all-round view, no obstacles in the radiation area. Dome antennas are easy to maintain, but the connector to the cable is a known weak point – check regularly and seal if necessary. For open arrays, occasionally check the rotating axis for play and corrosion.