Intercept course:
v_e = own speed
v_g = target speed
alpha = angle between target's course and target's relative bearing
beta = angle between target's relative bearing and intercept course
asin((v_g / v_e) * sin(alpha)) = beta
- Go to map (F5)
- Plot target's course with ruler
- Measure angle alpha with protractor by clicking first on target's course, then on target, then on your own position -> alpha
- Calculate beta with above formula
- Select protractor, click on target, then on your own position, open angle until it's equal to beta
- Follow this course to intercept target