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15. Navigation Sensors
2-25
2.20 Parallel Index (PI) Lines
PI lines are useful for keeping a constant distance between own ship and a coastline or a partner ship when
navigating. Up to six sets of PI lines are available depending on the maximum number of PI lines selected on the
menu.
You can control the orientation and interval of the PI lines from the PI line box, which is at the lower left corner.
PI
lines
PI lines
How to show PI lines
1. Put the cursor on OFF next to PI1 or PI2 at the left side of the display.
2. Spin the scrollwheel to display ON then push the scrollwheel.
PI line number
Status (ON or OFF)
PI 1
ON
032.0°T
5.60NM
PI line orientation
PI line interval
(Boxes not shown when
PI line is OFF.)
IL (Index Line) box
3. Use the scrollwheel to set index line orientation and line interval.
4. To switch between PI1 and PI2, put cursor on the PI line number box and spin the scrollwheel to show desired
PI line number.
5. To erase a PI line, select ON to the right of a PI line number, spin the scrollwheel to select OFF then push the
left button.
6. For operation with keyboard the INDEX LINE key switches active PI line.
PI line bearing reference
PI line bearing reference may be relative to own ship’s heading (Relative) or referenced to North (True) as follows:
Open the menu and select the Mark menu. Set Bearing Mode to Relative or True with Bearing Mode.