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Coloured borders are used to highlight the colonial territories of the British (red), Dutch (orange), Spanish (red) and Portuguese (blue) on this mid-19th century map of Southeast Asia. An inset map shows the island and strait of Singapore.

A map of the China Sea between Malaya, Sumatra and Borneo. The numbers indicate sea depth (bathymetry), and there are drawings of the side views of some of the islands (elevations), both used to aid navigation. Some maritime routes are also marked.