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Four navigation maps of locations around Banka (Bangka) Island, east of Sumatra. Anchor points, lighthouses, bathymetry (sea depth), shoals and other obstructions and landmarks (hills, buildings, trees) are shown.

Navigation map of the southern part of the Bangka Strait between Sumatra and Bangka Island. Bathymetry (sea depth), lighthouses, reefs, shoals and other obstructions (clay, coral, mud, stones, sand) are marked.

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 Banka (Bangka) Island, east of Sumatra, divided into administrative districts. Rocks, shoals, buoys and anchor points are marked around the coast, with mountains, wetlands, roads and settlements on land. Inset map of Pulau Liat (Liat Island).

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.