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A navigation map of a bay on the island of Weh, north of Sumatra. It features bathymetry (sea depth), reefs, shoals, and other obstructions (coral, mud, shells, stones, sand). Lighthouses are shown, with lines to indicate the limits of their range.

Eleven separate maps of bays and river mouths of Sumatra, including two bays on the island on Bras (Breueh Island), and the bay at Kota Radja (Banda Aceh). Bathymetry (sea depth), anchor points, reefs and shoals are marked, along with tide data.

Eight navigation maps from around the south coast of Celebes (Sulawesi). Anchorages, roadsteads (bodies of water sheltered from tides/currents), bathymetry (sea depth), shoals and other obstructions are shown, with hills and settlements as landmarks.