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This map of the Sunda Isles (‘Isles de la Sonde’) (with red borders) and Maluku Islands (‘Isles Moluques’) (green borders) also includes mainland Southeast Asia (blue borders), the Philippines (yellow borders) and New Guinea (green borders).

A late 18th century map of Asia featuring rivers, mountains, reefs and shoals. Regions are colour-coded, with the borders of the kingdoms of mainland Southeast Asia in green, and the islands of maritime Southeast Asia in yellow and red.

Nautical charts like this are detailed around the coasts and on the seas (e.g. river mouths, islands, shoals and reefs) while the interiors are blank. The web of lines is a rhumbline network, while the numbers indicate sea depth (bathymetry).

Maritime routes had to be adjusted in response to the changing monsoon seasons, as is seen on this late 18th century map of the Indian Ocean. Drawings of the heads of children blowing—called ‘wind-heads’—are used to indicate wind direction.

Two maps of the Indian Ocean showing currents (represented by arrows) and winds (represented by letters A to F) during the monsoon seasons. Three routes—one old and two new—from the Isle de France (Mauritius) east to the Strait of Malacca are shown.

A map of the China Sea between Malaya, Sumatra and Borneo. The numbers indicate sea depth (bathymetry), and there are drawings of the side views of some of the islands (elevations), both used to aid navigation. Some maritime routes are also marked.

Map of Asia, with mainland Southeast Asia in red and divided into ancient kingdoms, Sunda Islands in yellow, and the Philippines in grey. Twelve different scales are shown, as different countries used different measurement systems.

On this map of Asia, borders are outlined and cities underlined in different colours to show the colonial territories of the European powers: e.g. at this time, Benkulen (Bencoolen) on the west coast of Sumatra is British, and Malacca is Dutch.

Map of Asia, with mainland Southeast Asia in red and divided into ancient kingdoms, Sunda Islands in yellow, and the Philippines in grey. Twelve different scales are shown, as different countries used different measurement systems.

On this map of Asia, borders are outlined and cities underlined in different colours to show the colonial territories of the European powers: e.g. at this time, Benkulen (Bencoolen) on the west coast of Sumatra is British, and Malacca is Dutch.

Map based on the expeditions of Jean-François de Surville, a merchant captain with the French East India Company. Some details are from the diary of the French Navy officer Théobald René, Comte de Kergariou-Locmaria, who explored the region in 1785.

Map based on the expeditions of Jean-François de Surville, a merchant captain with the French East India Company. Some details are from the diary of the French Navy officer Théobald René, Comte de Kergariou-Locmaria, who explored the region in 1785.