5.1 PREPARATION
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The vector of an AIS target is to be displayed with a vector over ground or over water, depending on the speed
sensor setting and current offset setting. The type of the currently displayed vector can be confirmed by viewing
the setting of the stable mode.
When GND is displayed for the stability mode (պ
located at the top left corner of the radar display
described in Section 2.3.1):
Vector over ground
When Sea is displayed for the stability mode (պ located at the top left corner of the radar display
described in Section 2.3.1):
Vector over water
When the vector of an AIS target is displayed with a vector over water, the system has converted the AIS
target's vector over ground to the vector over water according to the data received from the AIS and the own
ship's information.
Note: When the AIS target's symbol is activated but the vector is not displayed, the following are
probable causes of the trouble:
COG/SOG is not yet input from the GPS.
The selected speed sensor is malfunctioning.
Types and Definitions of Association Target Symbols
When a tracked target and an AIS target are decided as identical, it is displayed with either of the following
symbols:
Vector/Symbol Definition Remarks
Priority for tracked target
Association target
Priority for AIS target
Association target
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