Furuno FAR-2218 Operator's Manual page 274

APPENDIX 6 SYMBOLS
AIS symbols
AIS symbols
Symbol
A
AP-30
Activated AIS target. Appears a thick-lined symbol. Color is
selectable from the menu.
Activated AIS target with vector. Indicates the target's ROT (Rate Of
Turn). Vector appears when the target's ROT is higher than the
menu setting.
Dangerous AIS target. Flashing red symbol indicates that the target
matches then CPA/TCPA criteria. Symbol stops flashing after the
alert is acknowledged.
Lost AIS target. Indicates that this target is lost and is no longer
being tracked. Appears as a flashing symbol with a red colored "X"
until the alert is acknowledged.
Sleeping AIS target. Color is selectable from the menu.
AIS target with no heading/speed data. Symbol appears as a
dashed line and faces the top of the screen.
AIS target selected for data display. Location of data display in the
information box is indicated below the target as "A", "B" or "C".
Associated AIS target. Appears when the target is associated and
AIS is given priority.
Dangerous associated AIS target. Appears in red color when the
target is associated, AIS is given priority and the target may be on a
collision course with your vessel.
Active AIS target with scaled ship symbol. Indicates the target
vessel's dimensions (length, width, antenna location) and changes
on-screen size according to display range.
AIS SART (TEST)
AIS SART (ACTIVE)
AIS Base station
AIS Aircraft.
Note: AIS aircraft are not regarded as a collision hazard. CPA and
TCPA for AIS aircraft appears as "***".
AIS Search and Rescue (SAR) Vessel
Name