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Geological map of the Minahasa Peninsula, Celebes (Sulawesi) showing rock types. Two more topographical maps show the terrain of the northeast tip of the peninsula, with elevation views including of the volcano Mount Klabat.

Map of Ara Bay (east coast of Sumatra). Bathymetry (sea depth), tide data, reefs, shoals and other obstructions (clay, mud, shells, stones, sand) are marked. Underwater trenches are shown, with light buoys, and there is an elevation view of the bay.

Navigation map of the northwest coast of Sumatra. Bathymetry (sea depth), anchor points, shoals and other obstructions (clay, coral, mud, stones, sand) are marked, with hills and settlements to use as landmarks.

Navigation map of the west coast of Celebes (Sulawesi), north of Makassar. Bathymetry (sea depth), shoals and other obstructions are marked, with hills and settlements as landmarks, and elevations (side views of hills) to aid navigation.

Navigation map of the west coast of Celebes (Sulawesi), north of Makassar. Bathymetry (sea depth), lighthouses, shoals and other obstructions are marked, with trees and hills as landmarks, and elevations (side views of hills) to aid navigation.

Navigation map of the west coast of Celebes (Sulawesi), north of Makassar. Bathymetry (sea depth), shoals and other obstructions are marked, with hills and settlements as landmarks, and elevations (side views of hills) to aid navigation.

Four navigation maps of waterways on the northeast coast of Borneo, including the Karang Muaras reef. Anchorages, bathymetry (sea depth), shoals and other obstructions are shown, with trees, hills and elevations (side views of hills) as landmarks.

Fifteen separate maps of bays and river mouths of Sumatra, including bathymetry (sea depth), anchor points, reefs and shoals, and tide data. There is a drawing of the mouth of the Pidada-rivier.

Map of the east coast of the Aru Islands (Maluku Islands), with bathymetry (sea depth), tides and currents, shoals and other obstructions. An inset map shows the anchorage at islands off the coast, along with elevation views of the islands.

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.

Map of part of the north coast of Kaiser-Wilhelmsland (German New Guinea) spread over two sheets. It focuses on rivers, noting width, depth, temperature, currents, vegetation etc.; and on mountains, showing heights and side views (elevations).

A navigation map of the northern tip of Sumatra, featuring bathymetry (sea depth), reefs, shoals, and side views of landmark mountains (elevations). Lighthouses are highlighted in red and yellow, with lines to indicate the limits of their range.