EDITION 12 CURRENT FOR 2016. PUB.160 SAILING DIRECTIONS (PLANNING GUIDE) SOUTH ATLANTIC OCEAN AND INDIAN OCEAN NATIONAL GEOSPATIAL-INTELLIGENCE AGENCY Sailing Directions (Planning Guides) include relevant physical, political, industrial, navigational and regulatory information about the countries adjacent to a particular ocean basin in a single volume. PLANNING GUIDE SOUTH ATLANTIC OCEAN & INDIAN OCEAN. Sailing Directions are published by the National Geospatial- Intelligence Agency (NGA) under the authority of Department of Defense. Sailing Directions, covering the harbors, coasts, and waters of the world, provide information that cannot be shown graphically on nautical charts and is not readily available elsewhere. Planning Guide publications are compiled and structured in the alphabetical order of countries contained within the region covered by each publication. Sailing Directions (Enroute) include detailed coastal and port approach information which supplements the largest scale chart produced by the National Geospatial-Intelligence Agency. This publication is divided into geographic areas called "Sectors.."