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This map of the Madura Strait between Java and Madura is designed to aid navigation: bathymetry (water depth), lighthouses, shoals and reefs, rocks and mud, anchor points, and landmark mountains are all marked. Text describes the tidal conditions.

Map of the Penang Strait, including written instructions on how to navigate the strait. On land, areas of cultivation are marked, with a table listing acreage used for each crop. A boundary with Siam based on an 1831 treaty is also shown.

A map to aid in the navigation of the rivers leading to Saigon (Ho Chi Minh City, Vietnam). Details include bathymetry (water depth), currents, and a side view (or ‘elevation’) of hills to use as a landmark. Tides are described in written remarks.