B&G Network Wind - Manual (Page 18)

HB-0502-03 18
THE WIND TRIANGLE
ABBREVIATIONS AND DEFINITIONS
AWA Apparent Wind Angle - The angle between the
boat's bow and the wind blowing across the
deck (at mast height).
AWS Apparent Wind Speed - The wind speed across
the deck (at mast height).
TWA True Wind Angle - The wind angle between the
boat's heading and the true wind (at mast
height). This is calculated from AWA, AWS and
boat speed. This is the wind relative to the
water, not the land.
TWS True Wind Speed - The wind speed over the water,
independent of the boat's motion through it. Calculated
from AWA, AWS and boat speed.
VMG Velocity Made Good - A measure of
performance upwind or downwind calculated
from TWA and boat speed.