6-75  Section 6    Target Tracking and AIS 
 
 
 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22 
23 
24 
25 
26 
27 
 
 
 
Trial maneuvering in the true vector mode 
If the own ship's vector mode is the true vector mode, the own ship's vector is calculated according to 
the own ship's trial speed and trial course as well as the own ship's dynamic characteristic, and the 
result is displayed as the own ship's expected course. The following figures show an example of 
veering to the left: the dangerous target at front right has changed to a safe target as a result of trial 
maneuver. 
The tracked target information indicates the current CPA and TCPA values regardless of the result of 
simulation. 
 
 
 
Dangerous target
HL
 
Change of symbol
as a result of
 trial 
maneuver
 
 
HL
 
TRIAL
NORMAL
 
 
Route
Own ship's vector 
T
Trial Maneuvering in the True Vector Mode