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From a Dutch geographical society journal, this map of the west coast of Atjeh (Aceh), Sumatra, shows shoals, reefs, bathymetry (sea depth) and anchor points. On land, there are mountains (with heights), rivers, pepper plantations and rice fields.

Included in a book chapter describing the northern peninsula of Halmahera, this map focuses on the coasts and nearby islands, with the interior left mostly blank. There are seven elevation views of mountains, and two inset maps.

On this map of Southeast Asia, numerous small islands, shoals and reefs are marked and named, especially in the South China Sea and around the Sunda and Maluku islands. Submarine cables to carry telegraph messages around the region are also shown.

Map of the southeast coast of British New Guinea, divided into administrative regions, with the northern regions left mostly blank. Based on the explorations of the Scottish missionary James Chalmers.

Topographic map of the island of Bawean in the Java Sea, with terrain shown by contour lines, and mountains labelled with their heights. Villages, forests (heavy, light, teakwood) and crops (coconut, coffee, alang-alang, rice, bamboo) are marked.

Plan of Singapore harbour, with wharfs and buildings. A roadstead—a body of water sheltered from tides/currents, for ships to anchor—is labelled ‘Singapore Road’. Islands, shoals and reefs are marked, as are roads and buildings in the city.

Maritime map of the Philippines, with inset maps of bays showing bathymetry (sea depth), shoals, reefs and anchor points. There is also an inset map of Taal Volcano, and elevations (side views of terrestrial landmarks like mountains and islands).

Navigation map of the mouth of the Padang Tikar River, on the west coast of Borneo, featuring bathymetric (water depth) routes. Obstructions are marked with letters: ‘m’ (mud), ‘z’ (sand). Trees, hills and fishermen’s houses are shown as landmarks.

Navigation map of the mouth of the Padang Tikar River, on the west coast of Borneo, featuring bathymetric (water depth) routes. Obstructions are marked with letters: ‘m’ (mud), ‘z’ (sand). Trees, hills and fishermen’s houses are shown as landmarks.

A map showing the results of the 1883 eruption of the Krakatoa volcano. Black numbers indicate sea depth before the eruption; red numbers are after.

Nine maps of the effects of the 1883 Krakatoa volcanic eruption, including on Rakata Island itself, and Calmeyer Island (formed by the eruption). Other maps use brown shading to show the flooding of nearby islands and settlements by ensuing tsunamis.

A map of the effects of the 1883 Krakatoa volcanic eruption. The orange line is the islands’ outline pre-eruption; the red line is the boundary of the collapsed area. Red numbers are sea depth. Pre- and post-eruption sizes of the islands are listed.