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Six drawings of bays, including the Bay of Tiku (‘Rade de Ticou’) on the west coast of Sumatra, showing Tiku between the mountains Pagaman and Priaman. Two other drawings are marked ‘Poulo Clauis’ and are possibly bays on the coast of Aceh, Sumatra.

This map showcases the colonial territories of Southeast Asia in the 18th century, with text detailing trading information and the products of each region. There are five inset maps featuring plans of specific trading ports.

Chart of the Sunda Strait, focusing on bays and islands, and showing bathymetry (sea depth), anchor points, shoals and reefs, landmarks, and a rhumbline network, all to aid navigation. Includes an inset map of the bay of the city of Banten on Java.

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.

Nautical charts, like this late 18th century example of the north-west coast of Borneo, were designed to help ships navigate. The numbers marked along the coastline and sea routes indicate the depth of the sea (bathymetry).

Map of the Batavia (Jakarta) and Bantam (Bantem) roadsteads (a body of water sheltered from tides/currents, for ships to anchor). Shoals, reefs and bathymetry (sea depth) are marked, with explanatory notes and a rhumbline network to aid navigation.

Navigation chart of the Sunda Strait, showing bathymetry (sea depth), shoals and reefs, landmarks, and a rhumbline network. Notes record good anchorages, sources of water and supplies etc. Inset map of the Zutphen Islands off the coast of Sumatra.

There is a port at the south of this map of the Côn Đảo archipelago (Vietnam), and notes giving details such as a suitable location to careen ships (turning a ship on its side for cleaning or repair). A ruined English fort is also marked.

A navigation map of the Java Sea and Sunda Islands, with bathymetry (sea depth), maritime routes, shoals and reefs, and elevations (side views of terrestrial landmarks). Inset maps feature the bay at Batavia and the straits between the Sunda Islands.

This detailed map of the Dutch East Indies in the mid-19th century is spread over eight sheets, plus a cover sheet showing the whole area. There are numerous inset maps of islands, bays, cities etc.

There is an inset map of the island of Singapore on this map of India. The island is coloured red to indicate it is British colonial territory. The surrounding islands and straits are marked, as well as details of the city such as the Sultan Mosque.

There is an inset map of the island of Singapore on this map of India. The island is coloured red to indicate it is British colonial territory. The surrounding islands and straits are marked, as well as details of the city such as the Sultan Mosque.