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Physical chart of the Indian Ocean: shewing the temperature of the water, the currents of the air and ocean, directions of the wind, districts of hurricanes, regions of the monsoons & ty-foons, trade routes &c&c.


location_onBrunei, Cambodia, East Timor, Indonesia, Laos, Malaysia, Myanmar, Papua New Guinea, Philippines, Singapore, Southeast Asia, Thailand, Vietnam

Chart of the Indian Ocean, showing climate and weather-related data, including around the seas and straits of Southeast Asia where trade routes are marked, along with monsoon and typhoon regions, and currents during the different monsoon seasons.

Chart of the East India Islands: exhibiting the several passages between the Indian and Pacific Oceans


location_onBrunei, Cambodia, East Timor, Indonesia, Malaysia, Philippines, Singapore, Thailand, Vietnam, Southeast Asia, Myanmar

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.

Chart... Shewing the Connection and respective distances by Sea, between the principal harbours and Settlements in the East Indies


location_onThailand, Myanmar, Malaysia, Indonesia

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.

A chart of the currents in the Indian Sea during the southwest monsoon, to the northward of the line / A chart of the currents in the Indian Sea during the northeast monsoon, to the northward of the line


location_onMalaysia, Indonesia, Myanmar, Thailand

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.


  • Filter from 1794 to 1849

Current results range from 1794 to 1849