User's Manual

97
4
xxx
Pos. ref.,point dist. “B,”
5
xx
Pos. ref., point dist.“C,”
6
xx
Pos. ref.,point dist. “D,”
7
c
DTE indicator flag
8
aa
Source identifier
A.5.21 THS – True Heading and Status
Actual vessel heading in degrees true produced by any device or system producing true
heading. This sentence includes a “mode indicator” field providing critical safety related
information about the heading data, and replaces the deprecated HDT sentence.
$--THS,x.x,a*hh<CR><LF>
Field No.
Format
Description
Remark
1
x.x
Heading, degrees true
2
a
Mode indicator
A.5.22 VBW – Dual Ground/Water Speed
Water-referenced and ground-referenced speed data.
$--VBW, x.x, x.x, A, x.x, x.x, A, x.x, A, x.x, A*hh<CR><LF>
Field No.
Format
Description
Remark
1
x.x
Longitudinal water speed, knots
ignored
2
x.x
Transverse water speed , knots
ignored
3
A
Status : water speed, A = data valid, V = data invalid
ignored
4
x.x
Longitudinal ground speed , knots
5
x.x
Transverse ground speed , knots
6
A
Status , ground speed, A = data valid, V = data invalid
7
x.x
Stern transverse water speed , knots
ignored
8
A
Status : stern water speed,A = data valid, V = data invalid
ignored
9
x.x
Stern transverse ground speed ,knots
ignored
10
A
Status : stern ground speed,A = data valid, V = data invalid
ignored
A.5.23 VSD – AIS Voyage Static Data
This sentence is used to enter information about a ship’s transit that remains relatively static during
the voyage.
$--VSD,x.x,x.x,x.x,c—c,hhmmss.ss,xx,xx,x.x,x.x*hh<CR><LF>
Field No.
Format
Description
Remark
1
x.x
Type of ship and cargo category
2
x.x
Maximum present static draught
3
x.x
Persons on-board
4
c—c
Destination
5
hhmmss.ss
Estimated UTC of arrival at destination
6
xx
Estimated day of arrival at destination
7
xx
Estimated month of arrival at destination
8
x.x
Navigational status