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Navigation map of the Riau Strait between Batam, Bintan and Rempang (Riau Archipelago). Bathymetry (sea depth), lighthouses, bouys, currents and obstructions are marked. There are side views of islands and mountains (elevations) to use as landmarks.

Map of Koninginne Baai (Bayur Bay, west coast of Sumatra) used to navigate Emma Haven (now Port of Teluk Bayur). It features bathymetry (sea depth), reefs and shoals, as well as lighthouses, buoys and two elevations (side views) of coastal mountains.

Navigation map of the mouth of the Padang Tikar River, on the west coast of Borneo, featuring bathymetric (water depth) routes. Obstructions are marked with letters: ‘m’ (mud), ‘z’ (sand). Trees, hills and fishermen’s houses are shown as landmarks.

Navigation map of the mouth of the Padang Tikar River, on the west coast of Borneo, featuring bathymetric (water depth) routes. Obstructions are marked with letters: ‘m’ (mud), ‘z’ (sand). Trees, hills and fishermen’s houses are shown as landmarks.

The residency of Kadoe in Central Java is shown divided into two regencies (yellow border) and 12 districts (blue borders). At the left edge, there are drawings (called elevations) of the side views of the area’s mountains, marked with their heights.

Map of the residency of Patjitan (Pacitan), south coast of East Java, divided into administrative districts. At the base, there is an elevation (side view) drawing of terrain around the Bay of Patjitan. Villages, forts and ruined temples are marked.

Map of the island of Nias off the west coast of Sumatra. Nias and Muslim villages are marked separately; large interior areas are left blank (‘Niet onderzocht [Not researched]’). Anchor points and side views of hills (elevations) are for navigation.