Air navigation chart V30 (series). 9. Lat. 44°N-60°N, long. 159°W-159°E. Scale 1 in.=30° naut. m. (1:2,188, 800) at lat. 52°30′ contour interval 1,000, 2,000. 3,000 5,000 7,000, 9,000, 12,O00. and 15,000 ft.