On
CRP5: Put centre dot top centre of
large square grid, rotate to wind direction (210º) under the heading index and
draw a line straight down from the centre dot.
Rotate
to put runway alignment (047ºM) under the heading index and move centre dot
down to 10kt line on the grid.
Draw
a line along the top of the grid; this represents the 10kt tail wind.
Rotate
to put the wind direction under the heading index and read wind speed where the
two lines intersect (11kts).