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Designed to aid navigation around the western Java Sea, this map features bathymetry (sea depth), current and tide data, and is marked with shoals, reefs and other hazards. Written notes add details at specific locations (e.g. ‘heavy tide rips’).

Brief notes printed on this 19th century map of Southeast Asia provide details about each region, including: numbers and ethnicity of the population, local or colonial rulers, crops and products, geography (corals, forests, volcanos, earthquakes).

This map of the Straits of Malacca features shoals and reefs, bathymetry (sea depth), drawings of side views of landmark mountains (elevations) and written observations, all designed to aid navigation.