JRC JMA-5912-6, Instruction Manual

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5.7 Trial Maneuvering
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Trial Maneuvering in the Relative Vector Mode
The result of Trial maneuvering in the Relative Vector mode is shown by a change in target vector. In the
figure below (in the same conditions as in the True Vector mode in the previous page), it is seen that the
acquired target is a dangerous one because its vector is crossing the CPA RING.
CPA Ring
Change of symbol
as a result of
trial maneuver
TRIAL
NORMAL
Dangerous target
CPA Ring
HL
HL
The above figure shows that the relative vector of the target has changed as shown in the figure as a result
of simulation (course and speed), so that the symbol color is changed into “White”, a safe target.
Irrespective of the simulation results, the current CPA and TCPA values are shown in the tracked target
information just like when the true vector mode is active.
The course change of own ship is displayed as a dotted-line.
Better information is provided by using relative motion and sea stabilization.