Ais Symbols And Their Meanings - Furuno FAR-2218-BB Operator's Manual

4. AIS OPERATION
4.4

AIS Symbols and Their Meanings

When the AIS is active, AIS targets are marked with the appropriate AIS symbol, as
shown in the table below.
SYMBOL STATUS
Activated
target
ROT higher
than preset
ROT
Dangerous
target
Lost target
Sleeping target
Target with
neither a
reported
heading nor a
COG
Target selected
for data display
A
Scaled symbol
Note 1: The equipment continues to process AIS targets when the AIS feature is de-
activated. When the AIS is activated again, symbols are immediately displayed.
Note 2: AIS symbols are momentarily erased and the screen is redrawn after the
heading is changed in the HEAD UP mode.
Note 3: When no AIS data is received, the message "AIS COM ERROR" appears in
the Alert Box. Check the AIS transponder.
Note 4: Physical and virtual AIS AtoN symbols that may appear are listed on the fol-
lowing page.
4-4
REMARKS
All AIS symbols shown with thick line.
Color is selectable from menu.
Displayed for turning ship.
Displayed when CPA/TCPA is within CPA/TCPA limit.
Red in color. Flashing until acknowledged.
"X" overlaid on a lost target.
Red in color. Erased after acknowledged.
Indicates the presence of a target equipped with AIS.
Color is selectable from menu.
A target with neither a reported heading nor COG is oriented
toward the top of the operational display area. The symbol is
shown with a solid line.
Broken square is overlaid on target selected to display its data.
A, B or C shown to indicate data box location at right side of the
screen.
Symbol shape is based on antenna location, ship length and ship
width. Size changes depending on range from own ship.