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Southeast Asia is on sheet four of this map. British colonial territory—British Burma, the Straits Settlements, Sarawak, Brunei, British North Borneo—is highlighted in red, with Dutch, Spanish, French and Portuguese territory also shown.

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), tide information, shipwrecks, compass roses and landmark mountains at the coasts.

Includes part of maritime Southeast Asia. New Guinea is labelled as ‘discovered in 1527’—a reference to the Portuguese explorer Jorge de Menezes—with additional labels describing the terrain (‘Very low land’, ‘Coast is not well known’, ‘An Opening’).

Includes part of maritime Southeast Asia. New Guinea is labelled as ‘discovered in 1527’—a reference to the Portuguese explorer Jorge de Menezes—with additional labels describing the terrain (‘Very low land’, ‘Coast is not well known’, ‘An Opening’).

This map uses colour to identify regions in late 18th century Southeast Asia, many of which roughly correspond to modern countries: Pegu=Myanmar, Tonkin/Cochin China=Vietnam, Lao =Laos, Siam=Thailand, Malaya=Malaysia, Philippin Islands=Philippines.