Humminbird 998c SI - Manual (Page 145)

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To Change Settings in the AIS Submenu:
Highlight AIS is in the Accessories MENU Tab, and press the RIGHT Cursor
key to access the AIS Submenu.
Tracking Target sets targets and related information to be visible
(On) or hidden (Off) in the Chart Views. In Bird’s Eye View, only target
position will be displayed. (Settings: On, Off; Default = On)
CPA (Closest Point of Approach) Limits sets how close a vessel can
approach. The amount can be set in nautical miles or time. When the
vessel has traveled past the set limit, the Vessel Icon will turn red in
the view and an alarm will sound. Press any key to turn off the alarm.
Press the RIGHT Cursor key to open the dialog box.
CPA sets the closest point of approach, measured in nautical
miles.
TCPA sets the closest point of approach, measured in time.
Target List shows active targets and related information that is
available with each AIS update. Press the RIGHT Cursor key to open
the Target List.
Sort: The list is sorted by MMSI number (if available). Targets
without an MMSI will be shown at the bottom of the list.
Scroll: Use the UP or DOWN Cursor keys to scroll through the
list and highlight targets. Press and hold the DOWN Cursor key
to scroll through all the targets on the list quickly.
Target Highlight: Highlight a target on the Target List, and press
the RIGHT Cursor key. The Target List will close and the active
cursor will go to the target you highlighted. Press the EXIT key
to remove the active cursor from the screen.
Target Course Line turns course lines off or sets the amount of time
represented on the target course line. The length of the course line
indicates the last known ship speed, while the direction of the arrow
shows heading. (Settings: Off, 00:00 - 59:59; Default = 5:00)
MMSI Label (Maritime Mobile Service Identity) sets the MMSI
label information to be Visible or Hidden. (Settings: Visible, Hidden;
Default = Visible)
AIS Target List
Accessories Menu Tab