Speed data
Speed data items require a compatible speed transducer and GNSS receiver to be connected to your chartplotter’s network..
Speed dataDataSpeedThe following data items are available in the Speed category:
Data items: |
|
|---|---|
STW (Speed Through Water / Boat Speed) (PGN 128259) |
Sensor-specific speed sources(1) |
Max STW |
Average STW |
Target STW(2) |
Polar performance(2) |
VMG to windward (Velocity Made Good) |
VMG to waypoint (Velocity Made Good) |
SOG (Speed Over Ground) (PGN 129026) |
Max SOG |
Maximum SOG (all time) |
Average SOG |
Drift (PGN 129291) |
On systems that contain multiple sources of STW, use the Sensor-specific option to select which STW reading you want to display.
This data item is only available when the boating activity is set to Sailing during your chartplotter’s initial startup wizard.