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Chart of the Singapore Strait, Riau Archipelago and Lingga Islands, marked with bathymetry (sea depth), side views of landmark mountains (elevations), written notes, and islands, shoals and reefs, all to aid navigation.

This map of the Burman Empire (Myanmar) features mountains, forests and rivers, as well as borders with Siam (Thailand) and Laos. Text notes how far up rivers boats can reach (‘Boats reach hither from the Sea’), ruby mines and rice fields.

Chart of the Singapore Strait, Riau Archipelago and Lingga Islands, marked with bathymetry (sea depth), side views of landmark mountains (elevations), written notes, and islands, shoals and reefs, all to aid navigation.