Furuno 821 - Page 13

2
A
B
C
D
Own ship
(radar)
D
A
B
C
Heading marker
Targets
Own ship
in center
Range and bearing
of a target, relative
to own ship, are
readable on the PPI.
(A) Bird's eye view of situation
(B) Radar picture of (A)
Figure 1-1 How radar works