VMG Calculator

VMG Calculator: boat reference frame

TWA: true wind angle 60°

TWS: true wind speed 15 kts

SOW: speed over water 5 kts

BTW: bearing to waypoint 60°

VMG: velocity made good 2.5 kts

AWA: apparent wind angle 46.1°

AWS: apparent wind speed 18.0 kts

SOW: boat speed

VMG: toward waypoint

TWA: true wind

AWA: apparent wind

BTW: bearing to waypoint