VMG Calculator (tidal, proper)
VMG Calculator (tidal, proper): ground frame
Mark is fixed; BTW updates as you drift.
TWA: true wind angle
60°
TWS: true wind speed
15 kts
SOW: speed over water
5 kts
Initial BTW
60°
Range to mark
5.0 nm
Tide dir: relative to boat
0°
Tide speed
0 kts
Play
Pause
Reset
t = 0.00 h
BTW: live bearing
60.0°
Range to mark
5.00 nm
VMG: velocity made good
2.5 kts
XTE: cross-track error
0.00 nm
SOG: speed over ground
5.0 kts
COG: course over ground
0.0°
AWA: apparent wind angle
46.1°
AWS: apparent wind speed
18.0 kts
SOW: boat speed
VMG: toward mark
TWA: true wind
AWA: apparent wind
Live BTW
Tide: current relative to boat
Track trail / original track