APPENDICES Page 59
Document id: 7000 108-011 A2
VBW - Dual Ground / Water Speed
The current position source must be external GPS, and heading
must be available for the transponder to accept this sentence.
Field Comment
Longitudinal Water Speed Ignored
Transverse Water Speed Ignored
Status: Water Speed Ignored
Longitudinal Ground Speed Used if Status is set to A
Transverse Ground Speed Used if Status is set to A
Status: Ground Speed Used
Stern Transverse Water Speed Ignored
Status Stern Water Speed Ignored
Stern Transverse Ground Speed Ignored
Status Stern Ground Speed Ignored
VTG - Course Over Ground and Ground Speed
Field Comment
COG, degrees True (2 fields) Used
COG, degrees Magnetic (2 fields) Ignored
SOG, knots (2 fields) Used
SOG, km/h (2 fields) Ignored
Mode Indicator Used
ZDA - Time & Date
This message is only interpreted if it’s received from the internal
GPS (the time synchronisation source).
Field Comment
UTC Used
Day Used
Month Used
Year Used
Local Zone Hours Ignored
Local Zone Minutes Ignored
AIS Specific Input Sentences
ABM - Addressed Binary and safety-related Message
Field Comment
Total Number of Sentences Used if in interval 1..9, otherwise the sentence
is ignored
Sentence Number Used if in interval 1..total sentences, otherwise
the sentence is ignored
Sequential Message Identifier Used if in interval 0..3, otherwise the sentence
is ignored
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