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JMA-9172-SA Instruction Manual > 5.OPERATION OF TARGET TRACKING AND AIS > 5.7  TRIAL MANEUVERING (Trial Maneuver)
5.7 TRIAL MANEUVERING 
(Trial Maneuver)
        
The trial maneuvering is the function of simulating own ship’s course and speed 
for collision avoidance when a dangerous target appears. When the own ship's 
course and speed are entered in manual mode, the trial maneuvering function 
checks if pre-acquired or pre-activated targets are dangerous.
The ranges of course and speed to be entered manually:
• Trial maneuvering is to simulate own ship’s course 
and speed in the conditions that the course and 
speed of a target ship are unchanged as they are.  
As the situation is different from any actual ship 
maneuvering, set values with large margins to CPA 
Limit and TCPA Limit.
Course: 360° (in 0.1° intervals) ...............................................  [EBL]  dial
Speed:
0 to 100kn (in 0.1kn step)........................................  [VRM]  dial