OceanSat AIS, Manual

Page: 72 / 85

Technical reference
Page 72
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.
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.
4 hhmmss.ss
Time of position, UTC
5 llll.ll,a Latitude, N/S
6 yyyyy.yy,a Longitude, E/W
7 x.x,T Course over ground, degrees True
8 x.x,N Speed over ground, knots
$--LR3,x,xxxxxxxxx,c--c,xxxxxx,hhmmss.ss,x.x,cc,x.x,x.x,x.x,x.x*hh<CR><LF>
Field
number Description
1 x Sequence Number, 0 to 9
2 xxxxxxxxx MMSI of "responder"
3 c--c Voyage destination, 1 to 20 characters
4 xxxxxx
ETA Date: ddmmyy
5 hhmmss.ss ETA Time, value to nearest second
6 x.x Draught, value to 0,1 metre
7 cc Ship/cargo (ITU-R M.1371, Table 18)
8 x.x Ship length, value to nearest metre
9 x.x Ship breadth, value to nearest metre
10 x.x Ship type
11 x.x Persons, 0 to 8191
$--TXT,xx,xx,xx,c--c*hh<CR><LF>
Field
number Description
1 xx Total number of messages, 01 to 99
2 xx Message number, 01 to 99
3 xx Text identifier, 01-99
4 c--c
Text message, ASCII, up to 61 characters
$--LR2,x,xxxxxxxxx,xxxxxxxx,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x.x,T,x.x,N*hh<CR><LF>