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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 maritime Southeast Asia, with four inset maps of locations in the region: Surabaya, some of the Lesser Sumba Islands, and Buton and Muna islands of the coast of Sulawesi. Mountains, forests, settlements and fields are represented pictorially.