Operation Manual

Sonar Operating Panel

850-164385 / Rev.C

Symbol

The Symbol functions provide on-screen graphic references for

targets, own ship and fishing gear.

(A) Target marker

To mark a target, move the cursor over it and press

the button. A triangular symbol with a

corresponding number will appear on the screen

over the target.

Position data for the defined markers are displayed

in the Objects menu.

Note that the system continues to track the markers

even when outside the sonar range.

The Target marker function can also be used for

manual target tracking as the system is designed to

calculate the speed (S), course (C) and distance (D)

between the last two chosen targets.

The Target marker data is displayed in white

figures for three minutes in the lower right hand

corner of the horizontal presentation. This function

is also an effective method for determining the

distance between two selected points on the screen.

(B) Own ship marker

The “own ship” button produces a square symbol on the screen

at the vessel’s current location when the button is pressed. The

own ship marker’s position data is displayed in the Objects

menu.

This marker may be used to estimate the size of a school of fish

or as an indication of the size of the purse seine. To activate the

function, move the cursor to the desired position and press the

button. A circular symbol will appear on the screen at the

chosen location. The size of the symbol is equal to that of the

purse seine selected.

(D) Gear symbol

The gear symbol may be either a purse seine circle or a trawl

symbol depending on the parameter chosen by the Gear button

in the Setup menu. The selected gear symbol will be displayed

in yellow.