Em-Trak A100 - Page 71

Technical reference
Page 69
6.8.17 VBW - Dual ground / water speed
This sentence conveys both water and ground referenced speed data.
6.8.18 VSD - Voyage static data
This sentence is used to enter information about the ship’s voyage.
4 xxx Pos. ref., "B," distance from stern, 0 to 511 metres
5 xx Pos. ref., "C," distance from port beam, 0 to 63 metres
6 xx
Pos. ref., "D," distance from starboard beam, 0 to 63 metres
7 c
DTE indicator flag
8 aa Source identifier
$--VBW, x.x, x.x, A, x.x, x.x, A, x.x, A, x.x, A*hh<CR><LF>
Field
number
Description
1 x.x Longitudinal water speed, knots - NOT USED
2 x.x Transverse water speed, knots - NOT USED
3 A Status: water speed, (A = data valid, V = data invalid) - NOT USED
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 - NOT USED
8 A Status: stern water speed, (A = data valid, V = data invalid) - NOT USED
9 x.x Stern transverse ground speed, knots - NOT USED
10 A Status: stern ground speed, (A = data valid, V = data invalid) - NOT USED
$--VSD,x.x,x.x,x.x,c--c,hhmmss.ss,xx,xx,x.x,x.x*hh<CR><LF>
Field
number
Description
1 x.x Type of ship and cargo category, 0 to 255
2 x.x Maximum present static draught, 0 to 25.5 metre
3 x.x Persons on-board, 0 to 8191
4 c--c Destination, 1-20 characters
5 hhmmss.ss Estimated time of arrival at destination (UTC)
6 xx
Estimated day of arrival at destination, 00 to 31 (UTC)
$--SSD,c--c,c--c,xxx,xxx,xx,xx,c,aa*hh<CR><LF>