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To aid navigation, this map shows small islands, shoals and reefs, maritime routes for use during monsoons or at particular times of the year, bathymetry (sea depth), past explorers’ routes, shipwrecks and text about monsoons, typhoons and currents.

Map of the Indian Ocean dominated by a rhumbline network—a web of interconnected lines used to help plot routes—with a compass rose at the centre. At the top there are (incomplete) drawings of people with text in Dutch, French, English and Spanish.

Colourful map of the East Indies focusing on maritime navigation: there is a compass rose at the centre of a rhumbline network (a web of lines to help plot routes). Shoals, reefs and islands are also marked.

Colourful map of the East Indies focusing on maritime navigation: there is a compass rose at the centre of a rhumbline network (a web of lines to help plot routes). Shoals, reefs and islands are also marked.

An early 18th century map of the Indian Ocean, illustrated with a drawing of Asian merchants riding an elephant and using a camel to transport their goods. Other men use bows and arrows to hunt ostriches. Ships are also shown sailing on the ocean.

Sumatra and the Malay Peninsula feature on this map of the Indian Ocean. Enganno Island, west of southern Sumatra, has a label that translates as ‘inhabited by very pernicious savages’. An inset map depicts the Madura Strait between Java and Madura.

The cartouche on this map of Asia is decorated with a colourful painting illustrating the region’s commerce, with Asian merchants displaying an assortment of goods, including jewellery, porcelain vessels and figurines, textiles and exotic animals.

Three sheets of a late 17th century map of Asia, with Southeast Asia on the third sheet. The oceans are decorated with drawings of sailing ships, and there is a detailed scene of Asian merchants, including a chained and kneeling slave and a camel.

Colourful hand-drawn portolan (nautical) navigation chart, featuring a rhumbline network (the web of interconnected lines), islands, shoals and reefs. With elaborately decorated scales and compass roses. Mounted on folding wood boards.

This mid-17th century map of the Indian Ocean has a colourful cartouche illustrated with paintings of Asian merchants and warriors with bows and arrows. The scale is decorated with paintings of cherubs.

This mid-17th century map of Southeast Asia is from Isaac Commelin’s book describing the voyages of the Dutch East India Company ‘Begin ende voortgangh…’. There is an inset map of the island of Botton (Buton Island, southeast of Celebes (Sulawesi)).

An early map of Southeast Asia featuring a rhumbline network, a web of lines to help plot routes and aid navigation. Where the lines meet, there is a compass rose with an arrow pointing north. The map is decorated with illustrations of sea monsters.