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On this map of Sumatra, the west coast mountain ranges contrast with the rivers to the east. An inset map of Singapore focuses on jungles along the coasts, and features bathymetry (sea depth) around the south coast and along the Singapore Strait.

This mid-18th century map shows the island of Sumatra and the Malay Peninsula, divided by the Straits of Malacca. A note in French at the top right corner states that the interior of Sumatra and the course of its rivers are unknown.

The title of this mid-18th century map of Sumatra and the Malay Peninsula claims that it was based on the diaries of sailors. Interestingly, the title is repeated in both German and French, as are the names of some of the locations marked on the map.

This 18th century map was designed to aid navigation through the Strait of Malacca between Sumatra and the Malay Peninsula. Shoals, reefs and islands are marked, and the numbers printed on the strait record sea depth (bathymetry).