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The coloured areas on this map indicate the coastal regions that flooded after the 1883 Krakatoa volcanic eruption. Krakatoa is shown in the centre of the Sunda Strait, between Sumatra and Java.

A map of the effects of the 1883 Krakatoa volcanic eruption. The red line is the boundary of the collapsed area. Black numbers are sea depth before the eruption; red numbers are after. A line above a number means no ground found at that depth.

A map showing the results of the 1883 eruption of the Krakatoa volcano. Black numbers indicate sea depth before the eruption; red numbers are after.

A map of the effects of the 1883 Krakatoa volcanic eruption. The orange line is the islands’ outline pre-eruption; the red line is the boundary of the collapsed area. Red numbers are sea depth. Pre- and post-eruption sizes of the islands are listed.

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’).

Southeast Asia is shown on sheets two and three of this 12-sheet map of the Indian and Pacific oceans, including detailed inset maps of the straits of Singapore, Bangka, Gaspar and Sunda, with bathymetry (sea depth), shoals, reefs, anchorages etc.

A navigation map of the Java Sea and Sunda Islands, with bathymetry (sea depth), maritime routes, shoals and reefs, and elevations (side views of terrestrial landmarks). Inset maps feature the bay at Batavia and the straits between the Sunda Islands.

A navigation map of the Java Sea and Sunda Islands, with bathymetry (sea depth), maritime routes, shoals and reefs, and elevations (side views of terrestrial landmarks). Inset maps feature the bay at Batavia and the straits between the Sunda Islands.

A navigation map of the Java Sea and Sunda Islands, with bathymetry (sea depth), maritime routes, shoals and reefs, and elevations (side views of terrestrial landmarks). Inset maps feature the bay at Batavia and the straits between the Sunda Islands.

A navigation map of the Java Sea and Sunda Islands, with bathymetry (sea depth), maritime routes, shoals and reefs, and elevations (side views of terrestrial landmarks). Inset maps feature the bay at Batavia and the straits between the Sunda Islands.

Navigation chart of the Sunda Strait, with sea depth, anchor points, shoals and other obstructions. Includes many bays, with four highlighted on inset maps. Partly based on writings of Captain Krusenstern whose 1806 route through the strait is shown.

Navigation chart of the Sunda Strait, with sea depth, anchor points, shoals and other obstructions. Includes many bays, with four highlighted on inset maps. Partly based on writings of Captain Krusenstern whose 1806 route through the strait is shown.