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Navigation map of the Celebes Sea, Makassar Strait and Java Sea, with bathymetry (sea depth), maritime routes, shoals and reefs, and landmark coastal mountains to aid navigation. On two sheets, which may not be from the same original map.

Hand-drawn portolan (nautical) chart, featuring a rhumbline network (the web of interconnected lines), bathymetry (sea depth), shoals and reefs, and names of coastal settlements, all to aid navigation. With a colourful compass rose.

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