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Although mainly a navigation map—with a rhumbline network and elevations of mountains—there are also many terrestrial details shown, such as settlements and mountains. The inset map of Hoeamohel details plantations and the cultivation of nut crops.

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.