Air navigation chart V30 (series). 77. Lat.-14° S-30° S, long. 50° W-78° W. Scale 1 in. = 30 naut. in. (1:2,188,800) at lat. 22°30′, contour interval 1,000, 2,000, 3,000, 5,000, 7,000, 9,000, 12,000, 15,000, and 20.000 ft.