Rot - Rate Of Turn; Vbw - Dual Ground / Water Speed; 1.5.1.10 Vtg - Course Over Ground And Ground Speed - L3 Communications ProTec AISD1000-00 Installation And Operation Manual

1.5.1.8

ROT - Rate of Turn

The rate of turn value is only used if the talker identifier is "TI". Otherwise the value
will only be used to determine if the vessel is "Moving Right" or "Moving Left".
Field
Rate of Turn
Status
1.5.1.9

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
Longitudinal Water Speed
Transverse Water Speed
Status: Water Speed
Longitudinal Ground Speed
Transverse Ground Speed
Status: Ground Speed
Stern Transverse Water Speed
Status Stern Water Speed
Stern Transverse Ground Speed
Status Stern Ground Speed

1.5.1.10 VTG - Course Over Ground and Ground Speed

Field
GOG, degrees True (2 fields)
COG, degrees Magnetic (2 fields)
SOG, knots (2 fields)
SOG, km/h (2 fields)
Mode Indicator
Initial Issue
Page 1–22
Aviation Recorders
Marine Systems
Notes
Used when status is "A". If Talker
is "TI", value is converted ascending
to 1371 msg 1, 2, 3 spec. If talker is not
"TI", value is set to - 127, 0, or + 127,
based on ROT value.
Must be "A"
Notes
Ignored
Ignored
Ignored
Used if Status is set to "A"
Used if Status is set to "A"
Used
Ignored
Ignored
Ignored
Ignored
Notes
Used
Ignored
Used
Ignored
Used
165M0601-00
Feb. 01/05