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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 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.

Two maritime routes—for use during the North-east and ‘fair’ monsoons—are shown on this late 19th century navigation map. The routes lead north through Southeast Asia, passing the Philippines, and ending in Hong Kong. Bathymetry (sea depth) is shown.

An Atlas produced by an expedition in central Sumatra, including: maps of topography, geology, a number of rivers in the region; drawings of mountains, graphs of lengths of roads; family trees of the royal families of Djambi (Jambi) and Palembang.

Map of the Minahasa and East peninsulas of Celebes (Sulawesi) focusing on the road system (shown by red lines). There are four inset maps, including one showing indigenous tribal areas, and a list of places with their latitude, longitude and height.

Hand-drawn map of the roadstead—a body of water sheltered from tides/currents, for ships to anchor—at Analaboe (Meulaboh) on the west coast of northern Sumatra. Bathymetry (sea depth), shoals and reefs, and an anchor point are marked.

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 coastline of the bay of Batavia (Jakarta) showing the extension of the port’s pier (in red, labelled CD), the sand and mud bank and bathymetry (sea depth) in the bay, and notes regarding changes in tide levels over the years.

Two maps of the Banda Islands—one of the whole group; the other focusing on the larger islands only—with an elaborate cartouche illustrated with six views of the islands. There is also a drawing of the volcano on Goenong Api (Banda Api).

On this map of the northern tip of the Minahasa Peninsula, the roads have been added in pencil after the map was printed. Similarly, the elevation (side view) of the peninsula’s mountains has the route of a journey added in pencil.

Designed to aid navigation around the western Java Sea, this map features bathymetry (sea depth), current and tide data, and is marked with shoals, reefs and other hazards. Written notes add details at specific locations (e.g. ‘heavy tide rips’).

Map of the residency of Patjitan (Pacitan), south coast of East Java, divided into administrative districts. At the base, there is an elevation (side view) drawing of terrain around the Bay of Patjitan. Villages, forts and ruined temples are marked.