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Erase Lost Target
Erases all of the Lost targets at the same time.
When there are no lost targets, this setting grays out.
1. Push [ENTER]/[
].
2. Push [t] to select <OK>.
3. Push [ENTER]/[
] again to clear all of the Lost
targets on the screen.
About "Lost Target": A vessel is regarded as a "Lost
target" after a specified period of time has passed
since the vessel last transmitted data, as described
below.
The "Lost target" icon disappears from the screen
6 minutes and 40 seconds after the vessel was
regarded as a "Lost target."
The criteria to become a Lost target
• Class A/B
Vessel type
Vessel is at anchor or moored
Class A
and not moving faster than 3
knots
1
Vessel is not moving faster than
Class B
2 knots
Vessel is at anchor or moored and moving
2
faster than 3 knot
Vessel is moving between 0 and
Class A
14 knots
3
Vessel is moving between 2 and
Class B
14 knots
Vessel is moving between 0 and
Class A
14 knots while changing course
4
Vessel is moving between 2 and
Class B
14 knots while changing course
5 Vessel is moving between 14 and 23 knots
Vessel is moving between 14 and 23 knots
6
while changing course
7 Vessel is moving faster than 23 knots
Vessel is moving faster than 23 knots
8
while changing course
*1 AIS Class B does not provide information about the navigation status, anchored or moored.
*2 CS: Carrier-sense, *3 SO: Self organized, *4 N/A: Not available
• Others
Nominal reporting
Category
interval
SAR
10 sec.
Base station
10 sec.
AtoN
3 min.
(Default: ON)
Nominal
Lost target
reporting
maximum
interval Class
interval Class A
A
3 min.
18 min.
—
10 sec.
60 sec.
10 sec.
60 sec.
—
3
sec.
60 sec.
1 ⁄ 3
—
6 sec.
36 sec.
2 sec.
36 sec.
2 sec.
30 sec.
2 sec.
30 sec.
Lost target
maximum interval
60 sec.
60 sec.
18 min.
Nominal reporting
interval Class B *
CS *
SO *
2
—
—
—
3 min.
3 min.
4
N/A*
—
—
—
30 sec.
30 sec.
—
—
—
30 sec.
30 sec.
30 sec.
15 sec.
30 sec.
15 sec.
30 sec.
5 sec.
30 sec.
5 sec.
6
AIS RECEIVER
Lost target maximum
1
interval Class B *
1
CS *
SO *
3
2
3
—
—
18 min.
18 min.
4
N/A*
—
—
180 sec.
180 sec.
—
—
180 sec.
180 sec.
180 sec.
90 sec.
180 sec.
90 sec.
180 sec.
30 sec.
180 sec.
30 sec.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
30
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