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On this map of Southeast Asia, British colonial territory is highlighted within red borders: the Straits Settlements (Singapore, Malacca and Penang) on the west coast of the Malay Peninsula; and British Burma (Chittagong and Aracan, and Tenasserim).

Southeast Asia is featured on the last of the four sheets of this map of Asia. The South China Sea is particularly detailed, with islands, rocks, shoals and reefs named, sometimes dated, and even marked with the name of the ship that mapped them.

The shoals and reefs of maritime Southeast Asia are highlighted on this colourful mid-19th century map, with the treacherous waters around many islands and straits marked.

An early 19th century map, with the regions of Southeast Asia marked with different colours. Interestingly, Cambodia and modern Vietnam (labelled here as Cochinchina and Tonkin) are grouped with China.

Published by the English cartographer John Cary (c.1754–1835), this map is marked with the routes taken from Europe to Asia by the British Royal Navy captains James Cook, John Gore, and George Vancouver, as well as the French explorer Lapérouse.

Map focusing on the passages between the islands of maritime Southeast Asia. Many 18th century routes are labelled with the ship/captain’s name and date, and there are notes on some shoals and reefs recording names, details and incidents/shipwrecks.

Map focusing on the passages between the islands of maritime Southeast Asia. Many 18th century routes are labelled with the ship/captain’s name and date, and there are notes on some shoals and reefs recording names, details and incidents/shipwrecks.

Longitude is indicated in two different ways on this mid-18th century map: along the top border, it is shown in degrees (number of degrees east of London); more unusually, along the bottom border, it is shown in time (number of hours east of London).

A late 18th century map of Asia with regions divided by colour-coded borders, and detailing rivers, mountains, reefs and shoals.

A late 18th century map of Asia with regions divided by colour-coded borders, and detailing rivers, mountains, reefs and shoals.

A late 18th century map of Asia published in London by John Bowles, with regions indicated by colour. Central Borneo is labelled ‘Part inhabited by the Biayos’, which is seen on many contemporary maps, often with the comment ‘a savage people’.

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).