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Map of the island and residency of Bangka, divided into districts and sub-districts, and featuring mountains, rivers, wetlands, and settlements. The surrounding seas are marked with buoys, depth lines, anchor points, shoals and reefs.

Map of the Gaspar Strait, off the east coast of Sumatra. The web of lines is a rhumbline network, numbers indicate sea depth (bathymetry), and there are side views of islands (elevations), all to aid navigation. Five 18th century routes are marked.