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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.

This colourful hand-drawn portolan (nautical) chart was designed to aid navigation. It features a rhumbline network (the web of interconnected lines), bathymetry (sea depth), shoals and reefs, anchor points and written notes.

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.