Scale = 1:200,000

Chart Distance = 11 cm

Therefore:

Earth Distance = 11 cm x 200,000
= 2,200,000 cm
= 22,000 m
= 22 km

CRP-5

Line up 22 km with KM Index at top and read Nautical Miles at side (9 o'clock position)

22 km = 11.9 NM