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Navigation map of the southern part of the South China Sea, including the straits of Malacca and Singapore, and the Riau Archipelago. Bathymetry (sea depth), lighthouses, shoals and other obstructions are marked, with hills to use as landmarks.

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.

Map of the Kai Islands, in the Banda Sea, designed for navigation: it features bathymetry (sea depth), reefs and shoals. Obstructions in the water are marked ‘kr’ (coral), ‘m’ (mud), ‘s’ (shells), ‘st’ (stones), and ‘z’ (sand).

Fifty-seven separate maps of bays, roadsteads—a body of water sheltered from tides/currents—and anchor points around the Lesser Sunda Islands. Landmarks, lighthouses, bathymetry (sea depth), shoals, reefs and other obstructions are marked.