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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’).

Map of the Batavia (Jakarta) and Bantam (Bantem) roadsteads (a body of water sheltered from tides/currents, for ships to anchor). Shoals, reefs and bathymetry (sea depth) are marked, with explanatory notes and a rhumbline network to aid navigation.

This early 19th century map is from a book titled ‘Mr. John Nieuhoff's Voyages’ in which the author reports on his travels to Southeast Asia, including a detailed description of the important port city of Batavia, as shown on the map.