5-42 
5.4  Decision Of Targets As Identical 
yy
yyy
5
CAUTION 
If a great value is set as a condition for deciding 
targets as identical, a tracking target near an AIS 
target is regarded as identical to the AIS target and 
it may not be displayed any more. 
For example, when a pilot boat (which is a small 
target not being tracked) equipped with an AIS 
function approaches a cargo ship as a tracking 
target not equipped with an AIS function, the 
tracking target symbol of the cargo ship may not 
be displayed any more. 
Types of Decision Conditions to be Set 
 
 
Decision conditions 
 
1. Association  On / Off (Function to decide targets as identical) 
2. Priority    AIS / TT (Symbol to be displayed) 
3. Bearing 
0.0 to 9.9° 
4. Range  0 to 999 m 
5. Course   
0 to 99° 
6. Speed    0 to 99 kn 
7.Applicable AIS Target  ACT or ACT & Sleep (activated AIS target or all AIS 
target)