This searchlight sonar is among the most advanced and fastest in its class. It offers six adjustable scanning steps (6, 12, 15, 18, 21, 24), allowing seamless optimization between high-precision modes and rapid scanning speeds. Depending on echo distances, it can complete a full 360° sweep in just a few seconds. Its exceptional speed makes it ideal for use at high vessel speeds while effectively covering vast areas. Delivering the fastest and clearest echoes, this sonar enhances both fishing and navigation with unparalleled accuracy.

When traveling at high speed, use the 24° step scan for a broad overview of your surroundings. If you detect something of interest, slow down and switch to the 6° step scan for a sharp, high-definition echo.

Based on advanced interpolation technology, a powerful signal processing and image enhancement system delivers high-definition images with exceptional clarity. Even when fish are close to the seabed, distinct echoes are displayed with precision, making interpretation effortless. The CH-500 generates sharp, high-contrast visuals, reducing eye strain and enhancing the overall user experience.

A wide range of display modes enhances versatility, including horizontal scan, vertical scan, full-circle A-scope, and a traditional echosounder view. Dual display options further expand functionality, offering combinations such as horizontal + vertical, half-horizontal + vertical, horizontal + full-circle A-scope, horizontal + A-scope, horizontal + history, and echosounder + A-scope.

Additionally, the sonar includes an audio signal notification system for fish and obstacle detection. The emitted sound varies depending on the nature and size of detected objects, distinguishing between air bubbles, small and large fish schools, or seabed textures. This feature makes it easy to separate fish schools from the surrounding seabed, improving environmental awareness for more efficient fishing.

This audio function is particularly valuable during long sea journeys, minimizing the need for continuous screen monitoring and offering greater convenience. An optional loudspeaker is required to enable the audio feature.

This searchlight sonar is the first in its class to feature an integrated stabilizer at its core. In rough seas, a vessel’s motion and inclination can shift significantly, causing echo distortions that lead to inaccurate data displays. The stabilizer effectively compensates for these disruptions, ensuring precise and reliable information for the user. Once activated, it restores echoes to their proper circular shape, delivering accurate data regardless of sea conditions, vessel speed, or inclination.  

Thanks to the built-in stabilizer’s compensation, the sonar can detect fish that might go unnoticed with a non-stabilized echo. Gain control adjusts the echo strength: higher gain improves detection, but excessive gain amplifies unwanted echoes from air bubbles and other interferences. Therefore, gain must be fine-tuned based on the user’s needs.  

With Furuno’s Quick Gain Control, adjustments take effect instantly across the entire sonar display, eliminating the need to wait for the next beam pass. This real-time responsiveness ensures no critical information is missed, even in deep waters. This feature is particularly valuable when tracking fast-moving fish that require immediate action.