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3.4  General Radar Operations
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3.4.6   Switch True/Relative Motion Display Mode (TM/RM) 
 
 
Switching Relative Motion (RM) Mode to True Motion (TM) Mode 
 
 
 Procedures   1  Left-click the motion mode button located at the upper left of the radar 
display. 
 
 RM(T)  ⇒  TM 
 
The true motion mode will be selected. In the true motion mode, the own ship’s position 
on the radar display moves depending upon its speed and course and the influence of the 
current. Land and other fixed targets are fixed on the radar display and only actually 
moving targets move on the radar display. When the true motion mode is selected, the 
own ship’s position is set to about 60% of the display radius in the opposite direction to its 
course allowing for the influence of the current. Own ship starts moving depending upon 
its speed and course and the influence of the current. Subsequently, when own ship arrives 
at the position of about 66% of the display radius, it is automatically reset to its initial 
position at about 60% of the display radius in the opposite direction to its course allowing 
for the influence of the current. 
 
 
 
 
 
Resetting Own Ship to its Initial Position in True Motion (TM) Mode 
 
 
 Procedures   1  Left-click the motion mode button for 2 seconds. 
 
Own ship will be reset to its initial position as established when the relative motion mode 
is changed to the true motion mode. The ship starts moving from that position. 
 
 
Switching True Motion (TM) Mode to Relative Motion (RM) Mode 
 
 
 Procedures   1  Left-click the motion mode button. 
 
 TM  ⇒ RM  ⇒  TM  
 
The relative motion mode will be selected. Own ship returns to the center of the radar 
display.