Furuno FCR-2139S-BB - How to Adjust PI Line Length; Look-Ahead

15. NAVIGATION TOOLS
15-7
15.3.7 How to adjust PI line length
You can adjust the forward and backward lengths of a PI line when [Index Lines] is set
to 1.
1. Open the MENU and select [NAV Tools] and [PI Lines].
2. If not already displayed, click the [ON/OFF] button to display the PI line whose
length you want to adjust.
3. Click the value in [Forward] and [Backward] columns to adjust their lengths, refer-
ring to the illustration below.
4. Click the [Save] button to finish.
15.4 Look-ahead
Look-ahead sets the area ahead and around own ship for which to check for safe nav-
igation. See section 11.2 for how to activate own ship check.
PI line
PI line
Adjust the
forward length.
Adjust the
forward length.
Adjust the
backward length.
Adjust the
backward length.