1. OPERATIONAL OVERVIEW
1-53
1.39 PI (Parallel Index) Lines
PI lines are useful for keeping a constant distance be-
tween own ship and a coastline or a partner ship when
navigating. Up to six sets of PI lines are available de-
pending on the maximum number of PI lines selected
on the menu.
Max. 1 PI line: Six sets of PI lines (PI1 to PI6)
Max. 2, 3 or 6 PI lines: Four sets of PI lines (PI1 to PI4)
You can control the presentation and interval of the PI
lines from the [PI Line] box, which is at the lower-left
corner of the screen.
1.39.1 How to set the maximum number of lines to display
The maximum number of PI lines to display can be selected from [1], [2], [3] or [6] lines
as below. The actual number of lines visible can be less depending on line interval.
1. Open the [MAIN MENU].
2. Select [NAVTOOL], then push the ADJUST knob.
3. Select [PI LINE], then push the ADJUST knob.
4. Select [SET ALL PI LINE], then push the ADJUST knob.
5. Select the appropriate option, then push the ADJUST knob.
6. Close the menu.
1.39.2 How to change PI line bearing and interval
1. If not already displayed, show a PI line, referring to paragraph 1.39.1.
2. Place the arrow on the PI line orientation in the [PI Line] box.
3. Rotate the ADJUST knob to adjust the PI line bearing, between 000.0° to 359.9°.
Enter a negative value to move the PI line to the opposite side of the PI line pass-
ing through the own ship position.
4. Place the cursor on the PI line interval.
5. Rotate the ADJUST knob to change the PI line interval.
PI lines
PI line orientation
PI line interval
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