38
RADAR OPERATION
O
O
v
v
e
e
r
r
t
t
a
a
k
k
i
i
n
n
g
g
S
S
i
i
t
t
u
u
a
a
t
t
i
i
o
o
n
n
R
R
a
a
d
d
a
a
r
r
D
D
i
i
s
s
p
p
l
l
a
a
y
y
In the following screen captures from a SINS Radar display, we will show another vessel’s progression on the radar scope for determining an
overtaking
situation. You are on a course of 000°T. You are underway, but maintaining station (drifting). You are being overtaken by the other vessel. The white arrow
represents the RML line for the vessel. This white arrow is for training purposes and will not be indicated on the radar scope. (cont.)
1
2
Contact first acquired. Mark as "M1" and put time in minutes
acquired.
Three minutes later, acquire the contact again and Mark as
"M2" and put time in minutes acquired. The first mark can still
be faintly seen. The first and second mark will give you a
rough idea of the RML of the contact.
