Determine Set and Drift at 1031:
1. Plot GPS Fix at 1031
2. Determine DR: D = S x T / 60
D = 10 x 31 / 60 = 5.2
3. Find Set:
Draw construction line
FROM your 1031 DR
TO your 1031 GPS Fix (this is your Set - 017M)
4. Measure the distance of the construction line. This is 1.2 NM.
Use this distance to calculate Drift, using 60 D ST
S = 60 x D / T
= (60 x 1.2) / 31 = 2.3 kt
This is your Drift - 2.3 kts.
