B&G Network Tack User Manual

Page 12

HB-0522-01

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.

THE WIND TRIANGLE