Abstract: A map indicating the locations of four buoys and one stone beacon in Bahrein Harbour in the Persian Gulf. The buoys and beacon are marked in manuscript with corresponding arrows drawn in the right margin.The base map on which the buoys are indicated is Admiralty chart 20, 'Published at the Admiralty 15th. Augt. 1862', 'Small corrections... II-1906.'.A hand stamp on the verso reads, 'British India Steam Navigation Co. Ltd. Received 19 Aug. 1908'.Physical description: Materials: Printed on paper with manuscript additions in coloured inkDimensions: 670 x 485mm, on sheet 700 x 510mm