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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.

Map of part of the east coast of the Gulf of Papua, with river mouths, shoals, bathymetry (water depth). On land, notes on terrain (‘Hills 100 to 150 ft. high’), land (‘Good soil’), vegetation (‘Nipa and Sago Palms’) and people (‘Ipikoi Tribe’).

Three maps on one sheet of the Fly River in British New Guinea, from the mouth to where it meets the Palmer River. Bathymetry (water depth) and sandbanks are marked at the mouth and landmarks—hills, vegetation, villages—are noted along the length.

Produced by the British Admiralty’s Hydrographic Office, this map includes various navigational aids, such as maritime routes, bathymetry (sea depth), tide and current data, and elevations (side views of hills and mountains to use as landmarks).

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.

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.

Navigation map of the Celebes Sea, Makassar Strait and Java Sea, with bathymetry (sea depth), maritime routes, shoals and reefs, and landmark coastal mountains to aid navigation. On two sheets, which may not be from the same original map.

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.

Map of the Penang Strait, including written instructions on how to navigate the strait. On land, areas of cultivation are marked, with a table listing acreage used for each crop. A boundary with Siam based on an 1831 treaty is also shown.

Map of the Strait of Malacca, with inset maps of a central part of the strait and of the Singapore Strait. Bathymetry (sea depth), shoals and reefs are marked, and there are elevations (side views of hills and mountains to use as landmarks).

Chart of the Singapore Strait, Riau Archipelago and Lingga Islands, marked with bathymetry (sea depth), side views of landmark mountains (elevations), written notes, and islands, shoals and reefs, all to aid navigation.