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Furuno CSH-8LMk2 Sonar Excellence

Updated: Oct 20, 2022

For the second year in a row, the CSH-8LMK2 Omni Sonar was awarded the Best Marine Specialty Award at the 2022 NMEA Awards!


It's been 50 years since Furuno won their first NMEA award in 1971, and in that time, Furuno's outstanding products have brought home an impressive 248 Awards.



A compact, mid-frequency Sonar with revolutionary fish and seabed discrimination

The CSH-8LMK2 is a Full-Circle Scanning Sonar that rapidly detects fish schools, individual fish, and changing underwater conditions. Fish distribution and seabed conditions are displayed in 16 colours, 360 degrees around the vessel. The Sonar components consist of a standard 600mm stroke hull unit (400mm option available), a transceiver unit, and a processor unit.


Operating at 85kHz, the CSH-8LMK2 is considered a mid- frequency Sonar. Its narrow beam width coupled with its enhanced target identification capabilities make it ideal for searching near the vessel or in shallow waters. Fish and bottom echoes are clearly separated and bait fish are more easily tracked. With automatic tilt scanning as a standard feature, the CSH-8LMK2 is suitable for tuna vessels, midwater trawlers and purse seiners.


The Sonar's compact keyboard and Black Box configuration are designed to offer a flexible installation, and a variety of monitors are available to suit your installation and operational requirements. FURUNO's MU-series Marine Monitors are specially designed to meet the requirements of marine professionals around the world. For a second station, an additional display and a small remote controller can be simply plugged into the processor unit.


User-friendly, ergonomic controller

The control unit combines ergonomics and function in a user-friendly, comfortable configuration. All controls respond quickly to the operator’s command and the associated reaction can be seen on the screen immediately. Four user-defined functions can be assigned to Function keys (F1 to F4), providing for rapid setup and operation. An optional handheld remote controller allows for control of tilt, range and gain functions.


CSH-8LMk2 Controller - standard supply

What is Scanning Sonar?

The transducer arrangement consists of layers of elements. Each element is pointed in a slightly different direction which allows the Sonar to transmit 360 degrees simultaneously without rotating the transducer. The targets are redrawn on the display instantaneously according to the latest echo received from the transducer. Because this sonar scans quickly, it greatly improves the fishing operation, especially when searching for or following fast swimming fish.



On a 1000ft range Sonar updates the display 360 degrees every 0.54 seconds, while the conventional PPI sonar takes 32 seconds to train full circle under the same range/conditions. For the same range, Scanning sonars are capable of providing information that is about 60 times more comprehensive than PPI sonars. Faster target updating lessens the chance of missing a small change in underwater conditions. This is especially helpful when range and tilt require frequent adjustment while fishing, offering no frustration on redrawing time.


For more information contact our Sales Team

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