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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.

The many navigation aids marked on this map, including bathymetry (sea depth), anchor points, shoals, and elevations of hills, were designed to guide ships around this part of the west coast of Timor. The Dutch fort Concordia is also marked.

Although this map’s title refers to the south-western islands of the Banda Islands, it actually focuses on the Lesser Sunda Islands, including Flores, Sumba and Timor. The islands feature mountains and jungle, with shoals and reefs around the coasts.

Map of Timor with Dutch and Portuguese flags marking military forts. Details are represented pictorially e.g. villages by small houses, forests by trees. There are extensive handwritten annotations, with some text translated from Dutch to French.

Hand-drawn portolan (nautical) chart of the Lesser Sunda Islands, featuring a rhumbline network (the web of interconnected lines), shoals, reefs, elevations (side views of landmark mountains), and names of coastal settlements, all to aid navigation.