Section 8    Functions of the ECDIS (Option)  8-54 
 
8.13  Displaying Radar Images on a Chart 
by Overlaying 
Radar images can be displayed by overlaying on the chart. 
 
Note 
•  To perform overlay display of radar images, the radar function must be installed and radar 
images must be received from the radar system.   
•  If the radar system displays a short-range image and a long-range image on the ECDIS at the 
same time, the radar image on the ECDIS may be distorted. 
•  While the radar image is displayed, the display range can be changed in 11 steps 
(0.125/0.25/0.5/0.75/1.5/3/6/12/24/48/96 NM). 
•  In the case of ARCS charts, the display range varies with the chart to be displayed. If a range 
over 120 NM is selected, radar image display automatically turns off. 
•  The screen display color will automatically change to [Day3] when RADAR Overlay is turned 
on. (When the screen display color is Dusk/Night, automatic switching does not occur.) 
•  When Multi View is used, radar images canot be displayed on View2.