![](http://pdfasset.owneriq.net/b/d5/bd5cd713-3177-4399-a73c-cef74382846f/bd5cd713-3177-4399-a73c-cef74382846f-bg150.png)
15. NAVIGATION TOOLS
15-4
15.2.7 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], [PI Lines] and [Truncate].
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.
15.3 Check Area
Check area 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.