West coast of Africa from Presquile Bakassi to Cape Agulhas - islands in the Bight of Biafra - Ascension Island - Saint Helena Island, Tristan da Cunha Group and Gough Island. Often referred to as Pilots, Sailing Directions are designed for use by the merchant mariner on all classes of ocean-going vessels with essential information on all aspects of navigation. Sailing Directions are complementary to Admiralty Standard Nautical Charts and provide worldwide coverage in 74 volumes. Each publication contains quality colour photography and views, as well as information on navigational hazards, buoyage, meteorological data, details of pilotage, regulations, port facilities and guides to major port entry. New Editions of Admiralty Sailing Directions are published on a regular basis. Navigationally significant information for these publications is issued via the Admiralty Notices to Mariners weekly bulletin (Section IV).