High-End Sonars for commercial fishing operations and sport fishing battlewagons

Furuno’s award-winning Sonars are used in commercial fishing operations around the globe and can be seen catching fish on both working fisheries boats and sport fishing battlewagons. When looking for a sonar to make you more efficient and productive, there is only one choice. Demand the best, demand Furuno.

Introducing the NEW CSH10 360-Degree Scanning SONAR

Instantly scan in all directions

The CSH10 360-degree Scanning Sonar instantly captures the underwater conditions in all directions, making it easy to instantly understand the situation beneath the vessel, such as schools of fish, the seabed, and dropped lines. The 85 kHz frequency detection delivers excellent performance to distinguish between shoals of fish and bottom-trawling fish, and the sharp beam width is effective for detecting schools of fish near the surface. Equipped with a motion sensor as standard supply, Furuno’s unique beam stabilization technology enables stable image display even in rough weather.

Because a Full-Circle Scanning Sonar emits ultrasonic waves in all directions 360 degrees around the ship, instantly detecting and displaying images, its detection speed is much faster than that of a Searchlight Sonar. the CSH10 can instantly detect the entire periphery, capturing the same school of fish multiple times, making it suitable for detecting fast-moving bonito and tuna.

Beam Stabilization for accurate detecting

In rough weather, the vessel’s motion causes distortion in the display of fish echoes and target images. The CSH10 comes equipped with a motion sensor as standard supply, and Furuno’s unique beam stabilization technology automatically adjusts the beam to the specified angle, correcting for ship’s motion in heavy seas. Transmission and reception beams can be stabilized independently, allowing stable detection of shallows and schools of fish even in rough seas.

Furuno’s unique signal processing technology provides clearer images than ever. Not only does the beam stabilization function provide stable capture, but the excellent resolution of the image helps you identify schools of fish as well as underwater topography and structure.

Target Lock and Fish Quantity Mark

Target Lock provides two modes: Position tracking and School of Fish tracking. When using position tracking mode, you can track the target reef or other area as a fixed position. Or, automatically track schools of fish, calculating and displaying the distance and depth from your ship, as well as the speed and direction of the school. When you add a Fish Quantity Mark, the fish school information will be displayed in the data display, showing the length, width, area, and fish quantity index value of the school of fish. The fish quantity index value is calculated from the area of the fish school echo displayed within the fish quantity mark. Additionally, a tilt indicator has been added to the top left of the display screen. Tilt angle, linear/horizontal/vertical distance to cursor, beam detection range, and beam width top/bottom depth are displayed, allowing intuitive echo position recognition.

Redesigned Control Unit and Remote Control options

The new control unit is more compact than previous models, making it easy to install. Our popular function keys, tilt lever, sensitivity/range knob, and a large trackball are all available, and Furuno’s phenomenal RotoKey™ is now included. With the new optional wired or wireless remote control units, you can easily set your range, tilt angle, and sensitivity from a distance. The wireless remote control can be used with up to four units via Bluetooth® connection.

Sonar – a closer look

Sonar is a device for finding objects underwater using sound waves. For the purpose of fishing, sonar is defined as a device that can search both horizontally and vertically while a fish finder can search only vertically underneath the own ship.

Sonars transmit ultrasonic waves into the water below and receive the returning echoes from the seabed. Anything that gets hit by these ultrasonic waves will give a returning echo that shows up on the sonar display. The device that emits the ultrasonic waves is called the transducer.

To locate fish schools, Sonar shows a radar-like image of the surroundings of the ship. This image stretches from left to right and back and forth, showing the distribution and density of fish schools if present.

Purse seiners and trawlers worldwide rely on Sonar on a daily basis to get their catch.

Searchlight and Scanning Sonar

There are two types of Sonar: Searchlight Sonar and Scanning Sonar.

Searchlight Sonar works by transmitting a single ultrasonic beam that is 6 degrees wide. The Sonar will then rotate a further 6 degrees and repeat the process. In this way, Searchlight Sonar can search a wide area sequentially. High frequency ultrasonic waves take a comparatively long time travelling through the water, and this can limit the search speed. Due to the narrow beam transmitted, sometimes the Sonar will not display the surroundings properly while the boat is in motion.

Principles of a Searchlight Sonar

A Searchlight Sonar creates images of the water below much like how an airplane would take pictures of the earth below. The ultrasonic waves transmitted by the transducer below the ship turns around continuously like a searchlight, hence its name. The transducer transmits ultrasonic waves into the water, then immediately switches into a receiving mode. After receiving the returning echo from the seabed the transducer turns to the left or right and transmits a new burst of ultrasonic waves. This is the cyclic operation of a Searchlight Sonar.

How sonar works – Scanning Sonar

Scanning Sonar can search 360 degrees around the vessel in an instant. Due to the wide beam, no dead zones (zones that will not get displayed properly due to narrow beam width) will appear in the horizontal direction. Since the Scanning Sonar searches 360 degrees around the ship, the same fish school can be identified multiple times. Based on the information received by the Sonar it is also possible to estimate where the fish school is heading, and at what speed.

Scanning Sonar can display information “full circle” at 360 degrees, or “semi-circle” at 180 degrees at a time.

Sector scanning has a scan area of 90 degrees or 45 degrees at a time. Sector scanning works much like Searchlight Sonar, except that the beam width is much wider.

Principles of a Scanning Sonar

The transducer on a Scanning Sonar consists of roughly 1000 oscillators. These oscillators are arrayed in vertical and horizontal grids so that searches can be made in any direction. All of these oscillators operate simultaneously, alternating between transmitting ultrasonic waves and receiving returning echoes from the seabed. Since the oscillators are placed in a solid array it is possible to determine both the distance and direction to the fish schools found below in the water.

The way the Scanning Sonar determines the direction of the returning echoes is by having the array of oscillators timer controlled to turn on and off sequentially.

Models

CH500/180/12/250/6

MUST ADD SONAR SHAFT

180kHz Sonar System with 6″ Soundome and 12.1″ Display.

Includes 250MM Travel Hoist and operates at 12VDC.

Display Size: 12.1 inches

Display Type: Color LCD

Frequency: 180 kHz

Power Usage: 12 VDC

CH500/60/12/250

MUST ADD SONAR SHAFT

60kHz Sonar System with 8″ Soundome and 12.1″ Display.

Includes 250MM Travel Hoist and operates at 12VDC

Display Size: 12.1 inches

Display Type: Color LCD

Frequency: 60 kHz

Power Usage: 12 VDC

Range: 3000 ft

Ultrafast Scanning Speed

This Searchlight Sonar is one of the most comprehensive and fastest of its kind. It provides 6 scanning step variations (6,12,15,18,21,24) easily optimized between high precision modes or a high scanning speed, which can cover 360° in a couple of seconds, depending on the distance of the echoes. Due to its fast scanning speed, it can be used at high speeds while covering a very large area. The Sonar provides the fastest and clearest echo for the ultimate fishing and navigation experience. While moving fast, use the 24° step scan in order to get a glimpse of your surroundings. If you see something interesting, slow the vessel and switch to the 6° step scanning to produce a clear, high definition echo.

CH600BBH/12/400

MUST ADD SONAR SHAFT

85/215kHz Black Box Sonar System with 8″ Soundome.

Includes 400MM Travel Hoist and operates at 12VDC.

Display Size: Black Box

Display Type: Black Box

Frequency: 85 and 215 kHz

Power Usage: 12 VDC

Ultrafast Scanning Speed

This dual-frequency Searchlight Sonar is one of the most comprehensive and fastest of its kind. It provides 6 scanning step variations (6,12,15,18,21,24) easily optimized between high precision modes or a high scanning speed, which can cover 360° in a couple of seconds, depending on the distance of the echoes. Due to its fast scanning speed, it can be used at high speeds while covering a very large area. The Sonar provides the fastest and clearest echo for the ultimate fishing and navigation experience.

While moving fast, use the 24° step scan in order to get a glimpse of your surroundings. If you see something interesting, slow the vessel and switch to the 6° step scanning to produce a clear, high definition echo.

CSH5LMK2

MUST ADD SONAR SHAFT AND MOTION SENSOR

Black Box Full-Circle Scanning Sonar, 55 kHz, less shaft

and motion sensor

Display Size: Black Box

Display Type: Black Box

Frequency: 55 kHz

Power Usage: 100-115-120-220-230 VAC

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

The CSH5LMK2 is a full-circle scanning sonar that can rapidly detect schools, individual fish and changing underwater conditions around a vessel. Fish distribution and seabed conditions are displayed in 16 colors, 360 degrees around your vessel. The CSH5LMK2 is considered a mid-frequency sonar at 55 KHz. Its wider beam width coupled with its enhanced target identification capabilities make it ideal for searching deeper waters. Fish and bottom echoes are clearly separated and bait fish are more easily tracked. With automatic tilt scanning as a standard feature, the CSH5LMK2 is suitable for both midwater trawlers and purse seiners.

The Sonar’s compact keyboard and Black Box configuration helps make for a flexible installation. Other components consist of either a 400 or 600mm stroke hull unit, a transceiver unit, and a processor unit. A variety of monitors are available to suit your installation and operational requirements. FURUNO’s MU-series displays 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.