on some 1:50,000 topo), all in metric units This system is shown on some current maps (e.g. In 1977 the datum was changed to Leigon Datum 1977 used for the ellipsoid of Clarke 1880 (modified). The War Office projection (rectangular polyconic projection) has been defined 1853 and was mainly used in the late 19th century. Earlier maps had imperial units ('Gold Coast feet', not UK feet, equals 0.3047997 m), recent maps have metric units. One of the first datum was the Accra Datum 1929 used for the ellipsoid of War Office 1926 (also McCaw 1924), which can still be found on recent maps (e.g. For the Land Use Planning and Management Project at TCPDĭatum definitions, which are or have been applied in Ghana and result in some confusion and inaccuracy of mapping and surveys.
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