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Map of the Kai Islands, in the Banda Sea, designed for navigation: it features bathymetry (sea depth), tide data (arrows), reefs and shoals. Obstructions in the water are marked ‘kr’ (coral), ‘m’ (mud), ‘s’ (shells), ‘st’ (stones), and ‘z’ (sand).

Navigation map of the northwest coast of Sumatra. Bathymetry (sea depth), anchor points, shoals and other obstructions (clay, coral, mud, stones, sand) are marked, with hills and settlements to use as landmarks.

Navigation map of the Riau Strait between Batam, Bintan and Rempang (Riau Archipelago). Bathymetry (sea depth), lighthouses, bouys, currents and obstructions are marked. There are side views of islands and mountains (elevations) to use as landmarks.

Map of Koninginne Baai (Bayur Bay, west coast of Sumatra) used to navigate Emma Haven (now Port of Teluk Bayur). It features bathymetry (sea depth), reefs and shoals, as well as lighthouses, buoys and two elevations (side views) of coastal mountains.

Designed to aid navigation around the southeast coast of Borneo, this map features bathymetry (sea depth), and is marked with shoals, reefs and other hazards. Mountains (with their heights) and other landmarks along the coasts are also marked.

The first two sheets of this eight-sheet map focus on British New Guinea, with German and Dutch colonial areas of New Guinea also shown in part. There is a line marking a proposed change in border between Dutch and British territory.

Navigation map of the southern part of the South China Sea, including the straits of Malacca and Singapore, and the Riau Archipelago. Bathymetry (sea depth), lighthouses, shoals and other obstructions are marked, with hills to use as landmarks.

A navigation map of the northern tip of Sumatra, featuring bathymetry (sea depth), reefs, shoals, and side views of landmark mountains (elevations). Lighthouses are highlighted in red and yellow, with lines to indicate the limits of their range.

Navigation map of the mouths of the Koealoe (Kualu) and Panei (Barumun and Bila) rivers on the east coast of Sumatra. Large sand and mud banks, bathymetry (sea depth), bouys and currents are marked. On land, tall trees are shown to use as landmarks.

Map of Collingwood Bay, north coast of New Guinea, with bearings to mountains, bathymetry (sea depth), shoals and reefs. On land, notes on terrain (‘sloping plains’, ‘Stiff clay soil’), vegetation (‘Casuarina trees’) and people (‘FRIENDLY TRIBE’).

Map of British New Guinea, focusing on the sea (islands, shoals, reefs), coast (settlements, bays), mountains and land (‘dense forest’, ‘timbered with Eucalyptus’). Inset maps of Port Moresby, Samarai Island, and the whole island of New Guinea.

Map of parts of Fergusson and Normanby islands (east coast of New Guinea). Bathymetry (sea depth), reefs and shoals are marked, along with landmarks (mountains, villages, trees). Territories of two indigenous tribes—the Subia and Manayaya—are shown.