This is the Koden KDS-6000 BB sonar

Digital signal processing enables high-resolution images Both high resolution in the nearest range and noise reduction performance in the longest are materialized at a high level with the newly developed digital signal processing, KDP-V (Koden Digital Processing series V). High scanning speed for fast fish detection The scanning speed is significantly increased by adding 15° and 20° in the angle steps of the exploration sector. These steps are not equipped with the current model. It can quickly detect the surrounding schools of fish. Four different presentation modes available for various fishing scenes ・Sonar mode is useful for searching around the boat. ・Off-center mode helps to display more information from the front. ・Echo sounder mode is also available to display the image as a probe. ・Background scanning mode can display the reflected echoes of the seafloor in a cross-selection image.