11-13 
11.12  TARGET TRACKING FUNCTION 
 
(1)     Available range scale  : All range 
(2)     Acquisition 
Acquisition mode  : Manual/AUTO 
(AUTO mode uses Auto-acquisition Zone) 
Manual Cancellation  : Any one Target or All targets at once 
(3)     Tracking 
Number of Target  : 100 Targets (AUTO Tracking) 
Maximum tracking range : 32nm (Available all range scale) 
(4)     Presentation 
Display mode    : TM (True Motion) / RM (Relative Motion) 
Azimuth mode    : North-up / Head-up / Course-up 
Vector mode    : True/Relative Display 
Vector Length    : Variable, 1 to 60 min. (1min. step) 
Past Position    : True/Relative Display 
         Number of Dots   : 10 points 
            Display Interval Time  : 0.5 / 1 / 2/ 4 min. 
Time to Display Vector  : Within 1min. 
Time to Stabilize Vector  : Within 3min. 
(5)     Alarm 
Auto-acquisition Zone  : 2 (Sector) 
Setting Range    : 0.5 to 32nm 
Alarm Indication  : Symbol on Display, Visible / Audible Alarm 
(6)     Safe Limits (CPA / TCPA) 
Setting Condition  : CPA  LIMIT    : 0.1 to 9.9 nm 
        TCPA  LIMIT  : 1 to 99 min. 
Alarm Condition  : 
Safe 
Target 
CPA  >  CPA LIMIT or 
0  > TCPA or 
TCPA  > TCPA LIMIT 
Danger 
Target 
CPA  ≦  CPA LIMIT and 
0  ≦ TCPA ≦ TCPA LIMIT 
 
Alarm Indication  : 
Status Symbol Alarm Audible
Safe Target 
〇 (White) 
OFF OFF 
Danger Target
○ (Red)  CPA/TCPA 
ON 
 
Lost Target    : Symbol on Display 
Visible / Audible Alarm 
(7)     Data Indication 
Target Data    : Simultaneous and Continuous Display for 4 Targets 
         True Bearing, Range, True Course, True Speed, 
  CPA, TCPA, BCR and BCT 
Own Ship’s Data  : Course and Speed 
(8)     Trial Maneuver    : Manual Setting 
Trial Course    : 000.0° to 359.9° 
Trial Speed    : 0 to 100 knots 
(9)          Accuracy of Display  : Complied with IMO Requirement 
(10)  System Failure Alarm  : Visible / Audible Alarm 
(11)  Speed Input    : Manual / Auto (LOG)