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Navigation map of the waters and straits around some of the islands of the Riau Archipelago, between Sumatra and Batam. Bathymetry (sea depth), current and tide data, reefs, shoals and other obstructions (clay, mud, shells, stones, sand) are marked.

A mid-19th century map of Celebes (Sulawesi) and the Lesser Sunda Islands, divided into colour-coded administrative districts.