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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.

Map of the residency of Ambon in the Maluku Islands, divided by colour-coded administrative borders. There are inset maps the Banda Islands—including the nutmeg plantations and the town of Neira with its fort and hospital—and of Dutch New Guinea.