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The border of the Tenasserim Division of British Burma (Tanintharyi Region, Myanmar) is highlighted in orange on this set of six map sheets, showing the boundary with Siam (Thailand) to the east, and the islands off the west coast.

Map of Asia featuring steamship routes—including around Southeast Asia—connecting ports such as Penang, Singapore, Batavia (Jakarta), Saigon, Bangkok, Rangun (Yangon), Manila, Macassar (Makassar) etc. There is also an inset map of Singapore.

A nautical chart of the Indian Ocean showing bathymetry (sea depth), including in great detail around the seas and straits of Southeast Asia.

This late 19th century map of Southeast Asia shows the best maritime routes around the region, according to the time of year. There are also inset maps highlighting the rivers and southern islands of Singapore, and the sea depth around Labuan Island.

This navigation map of the mouth of the Kaladan River on the west coast of Arracan (modern Myanmar) features drawings of coastal features (elevations), bathymetry (sea depth), shoals and reefs, landmarks, and notes on how to enter the river safely.

This late 19th century map of Southeast Asia shows the best maritime routes around the region, according to the time of year. There are also inset maps highlighting the rivers and southern islands of Singapore, and the sea depth around Labuan Island.

Southeast Asia is shown on sheets two and three of this 12-sheet map of the Indian and Pacific oceans, including detailed inset maps of the straits of Singapore, Bangka, Gaspar and Sunda, with bathymetry (sea depth), shoals, reefs, anchorages etc.

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 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.

A late 18th century maritime map of Southeast Asia, marked with expedition routes including the return of Captain Cook’s HMS Endeavour from Australia in 1770, and Captain Philip Carteret’s circumnavigation expedition in 1768.

Map of the Bay of Bengal, with the western coast of mainland Southeast Asia. Shoals, reefs and islands are marked. The web of lines is a rhumbline network, while the numbers indicate sea depth (bathymetry), both used to aid navigation.