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Technical reference
$--LR2,x,xxxxxxxxx,xxxxxxxx,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x.x,T,x.x,N*hh<CR><LF>
4
hhmmss.ss
5
llll.ll,a
6
yyyyy.yy,a
7
x.x,T
8
x.x,N
6.9.7
LR3 - Long range reply for function requests 'I', 'O', 'P', 'U', and 'W'
The LR3 sentence contains the information requested by the I, O, P, U and W function characters.
$--LR3,x,xxxxxxxxx,c--c,xxxxxx,hhmmss.ss,x.x,cc,x.x,x.x,x.x,x.x*hh<CR><LF>
Field
number
1
x
2
xxxxxxxxx
3
c--c
4
xxxxxx
5
hhmmss.ss
6
x.x
7
cc
8
x.x
9
x.x
10
x.x
11
x.x
6.9.8
TXT - Text transmission
For the transmission of short text messages from the AIS equipment. These messages relate to the status of
the equipment.
$--TXT,xx,xx,xx,c--c*hh<CR><LF>
Field
number
1
xx
2
xx
3
xx
4
c--c
Page 72
Time of position, UTC
Latitude, N/S
Longitude, E/W
Course over ground, degrees True
Speed over ground, knots
Description
Sequence Number, 0 to 9
MMSI of "responder"
Voyage destination, 1 to 20 characters
ETA Date: ddmmyy
ETA Time, value to nearest second
Draught, value to 0,1 metre
Ship/cargo (ITU-R M.1371, Table 18)
Ship length, value to nearest metre
Ship breadth, value to nearest metre
Ship type
Persons, 0 to 8191
Description
Total number of messages, 01 to 99
Message number, 01 to 99
Text identifier, 01-99
Text message, ASCII, up to 61 characters
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