6. INTERPRETING THE DISPLAY

6.2Fish School

A fish school appears as a mass of echoes. The color of the mass shows the density. To know the distribution and center point of a fish school, choose several different tilt angles.

(A) Sea surface fish

Tilt angle: 0˚ to 10˚

Fish school

Sea surface reflections

(B) Midwater, bottom fish Tilt angle: 30˚ or more

Fish echo which appears before bottom can be detected.

Bottom

Tilt angle: 0˚ to 20˚

Fish echo which appears together with or after bottom can be detected.

Fish school

Bottom echo not displayed because

of decreased tilt angle. Sea surface reflections are present.

Fish school

Large midwater fish school is present.

Bottom

To search bottom fish, use a narrow tillt angle so the bottom echo will be weak, enabling you to see bottom fish echoes.

Fish echoes

6-2

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Furuno CSH-5L/CSH-8L manual Fish School, Fish echoes

CSH-5L/CSH-8L specifications

Furuno CSH-5L and CSH-8L are advanced marine radar systems known for their cutting-edge technology and user-friendly interfaces. Designed primarily for maritime applications, these radar units cater to a wide range of vessels, from commercial ships to fishing boats. The primary distinguishing feature of the CSH-5L and CSH-8L radar systems lies in their ability to provide high-resolution images and precise detection of targets, ensuring navigational safety and operational efficiency on the water.

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The CSH-5L model operates at a frequency range of 5 GHz, while the CSH-8L uses an 8 GHz frequency. Both radars are equipped with a rotating antenna that provides a wide coverage range, allowing for efficient monitoring of the surrounding marine environment. Their high sensitivity and low noise levels enhance target detection, making them particularly useful for locating small fishing vessels or buoys.

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