Africa - Union of South Africa - West Coast - Donkin Bay to Melkbosch Point'. This is the Decca edition of this chart. The Decca Navigator System was an early hyperbolic radio navigation system used primarily by ships and aircraft. The chart includes a specific Decca lattice overlays, showing Decca Navigation Lines (Lattice), a set of hyperbolic lines, which correspond to the signals received from the Decca Navigator transmitters, helping mariners plot their position more accurately at sea. The Decca Navigator System was extensively used in the mid-20th century but was phased out by more advanced systems like GPS by the 2000s. These charts are historically significant, reflecting a transitional phase in maritime navigation technology. . Published at the Admiralty under the superintendence of Captain Sir Frederick Evans. Published 1879 (1978) - First published 1879. This edition 1879. Large corrections to 1958. Small corrections to 1978. Large British nautical sea chart. Sea charts such as this were working navigational aids which were commonly updated and corrected during their working lives by hand annotation and/or printed overlays. They may also feature manuscript navigational notes, comments or other markings. Size 103 x 66 cm | 40.5 x 26.0 inches. Condition: Good; suitable for framing. Please check the scan for any blemishes prior to making your purchase. This is a folding map. There is nothing printed on the reverse side, which is plain. Tags: Admiralty, Africa, South Africa, South Africa + Admiralty, South Africa + Admiralty + British Admiralty, South Africa + British Admiralty, South Africa + Nautical charts

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