Instruction Manual
30
6
AIS RECEIVER
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Erase Lost Target (Default: ON)
Clears 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 specied 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
Nominal
reporting
interval Class
A
Lost target
maximum
interval Class A
Nominal reporting
interval Class B *
1
Lost target maximum
interval Class B *
1
CS *
2
SO *
3
CS *
2
SO *
3
1
Class A
Vessel is at anchor or moored
and not moving faster than 3
knots
3 min. 18 min. — — — —
Class B
Vessel is
not moving faster than
2 knots
— — 3 min. 3 min. 18 min. 18 min.
2
Vessel is at anchor or moored and moving
faster than 3 knot
10 sec. 60 sec. N/A*
4
N/A*
4
3
Class A
Vessel is moving between 0 and
14 knots
10 sec. 60 sec. — — — —
Class B
Vessel is moving between 2 and
14 knots
— —
30 sec. 30 sec. 180 sec. 180 sec.
4
Class A
Vessel is moving between 0 and
14 knots while changing course
3
1
⁄
3
sec. 60 sec. — — — —
Class B
Vessel is moving between 2 and
14 knots while changing course
— —
30 sec. 30 sec. 180 sec. 180 sec.
5 Vessel is moving between 14 and 23 knots
6 sec. 36 sec.
30 sec. 15 sec. 180 sec. 90 sec.
6
Vessel is moving between 14 and 23 knots
while changing course
2 sec. 36 sec.
30 sec. 15 sec. 180 sec. 90 sec.
7 Vessel is moving faster than 23 knots
2 sec. 30 sec.
30 sec. 5 sec. 180 sec. 30 sec.
8
Vessel is moving faster than 23 knots
while changing course
2 sec. 30 sec.
30 sec. 5 sec. 180 sec. 30 sec.
*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
Category
Nominal reporting
interval
Lost target
maximum interval
SAR 10 sec. 60 sec.
Base station 10 sec. 60 sec.
AtoN 3 min. 18 min.
MR-1010RII / Page 13-35