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5.3 AIS Operation
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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.
Display Item
i
Detail mode Simple mode
NAME (ship name) Up to 20 characters
Call Sign Up to 7 characters
MMSI Up to 9 characters
COG (course over ground) or CTW (course through water)
0.1° unit
SOG (speed over ground) or STW (speed through water)
ii
0.1 knot unit
CPA (closest point of approach) 0.1 nm unit
TCPA (time to CPA) 0.1 min unit
BRG (true bearing)
0.1° unit
Range 0.01 nm unit
HDG (heading bearing)
0.1° unit
ROT (rate of turn)
iii
0.01°/min
POSN (latitude / longitude) 0.0001’ unit
Destination (waypoint) Up to 20 characters
NAV Status Status (number)
Not displayed
i. 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.
ii. When SOG or STW indication column is 102.2kn, other ship’s speed is 102.2kn or more.
In this case, this system cannot compute CPA and TCPA, and then does not display the value information.
iii. When ROT indication column is blank, this condition indicates receiving data which cannot be displayed
values. In this case, tuning direction displayed on its turning indicator can be only depended. The turning
indicator is displayed as perpendicular straight line to its heading direction of AIS symbol. (See the section
“5.1.2 Definitions of Symbols.)
For NAV Status, one of the following statuses is displayed in accordance with Navigation Status:
No. Status
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
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