Long range air navigation chart V 70 (series). 2. Lat. 12°-N-48°N, long. 154°E-85°E. Scale 1 in.=70 naut. m. (1:5.107,200) at lat. 30°, contour interval 1,000, 3,000, 5,000, 7,000, 10,000, 15,000, 20,000 and 25,000 ft.