Displaying Ais Information [Tgt Data] - JRC JMA-5312-6 Instruction Manual

5.3.5 Displaying AIS Information [TGT DATA]

Types of information displayed
There are two modes (simple and detail) to display AIS target information. The display items are
determined by the selected mode.
NAME (ship name)
Call Sign
MMSI
COG (course over ground) or CTW (course through water)
SOG (speed over ground) or STW (speed through water)
CPA (closest point of approach)
TCPA (time to CPA)
BRG (true bearing)
Range
HDG (heading bearing)
ROT (rate of turn)
POSN (latitude / longitude)
Destination (waypoint)
NAV Status
If the numeric information of ROT is blank, the radar is receiving the AIS data which is cannot displayed.
In this case, you can only trust the turning direction which is indicated by the turn indicator. The turn
indicator is displayed on the AIS symbol as the line perpendicular to the heading direction. (See the
Section 5.1.2 "Types and Definitions of AIS Target Symbols")
If the numeric information of SOG or STW is 102.2kn, the target ship's speed is 102.2kn or over. Then the
system cannot calculate CPA and TCPA. Therefore, missing is indicated in the CPA and TCPA
information.
The detail mode displays the numeric data of only a single ship, the simple mode can display the numeric
data of up to two ships.
For NAV Status, one of the following statuses is displayed in accordance with Navigation Status:
Display Item
No.
0 Under Way Using Engine
1 at Anchor
2 Not Under Command
3 Restricted Maneuverability
4 Constrained by Her Draft
5 Moored
6 Aground
7 Engaged in Fishing
8 Under Way Sailing
9 Reserved
10 Reserved
11-14 Reserved
15 Not Defined
Detail mode
0.1 ° unit
0.01 nm unit
0.1 ° unit
0.01 °/min
0.0001' unit
Up to 20 characters
Status (number)
Status
5-33
Simple mode
Up to 20 characters
Up to 7 characters
Up to 9 characters
0.1 ° unit
0.1 knot unit
0.01 nm unit
0.1 min unit
Not displayed