Air navigation chart V30-40 to V30-82 (with omissions). V30-40. Lat. 14° N-30° N, long. 78° E-50° E. Washington, D. C., published June 1943, 2d edition, June 1947. Scale 1″=30 naut. m. (1:2,188,-800) at lat. 22°30′, contour interval 1,000 ft.