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Navigation map of the Riau Strait between Batam, Bintan and Rempang (Riau Archipelago). Bathymetry (sea depth), lighthouses, bouys, currents and obstructions are marked. There are side views of islands and mountains (elevations) to use as landmarks.

Two maps featuring many of the islands between the Malay Peninsula, Sumatra and Borneo. In the top map, Batam, Bintan, Lingga and many of the smaller Riau Islands. In the bottom map, Bangka and Belitung on the east coast of Sumatra.