Wind Correction Calculator

• θ = wind direction − true course
• WCA = asin( (wind × sin θ) ÷ TAS )
• True heading = true course + WCA

True course 090°, TAS 120 kt, wind 130° at 25 kt.

1. 1.Wind angle θ = 130° − 090° = 40° off the nose-right.
2. 2.Crosswind = 25 × sin(40°) ≈ 16 kt; WCA = asin(16 ÷ 120) ≈ 7.7° right.
3. 3.True heading = 090° + 7.7° ≈ 098°; GS ≈ 100 kt.

WCA ≈ +7.7°, steer ≈ 098°, ground speed ≈ 100 kt.

To hold a desired course in wind you must crab into it by the wind-correction angle. This solves the same navigation triangle as the wind triangle tool but leads with the WCA and the true heading to steer, plus the resulting ground speed — the numbers you set on the heading bug.

Maximum drift ≈ (crosswind ÷ TAS) × 60 in degrees, and you always crab INTO the wind. A wind from the right needs a heading to the right of course.