Search

Navigation map of the waters and straits around some of the islands of the Riau Archipelago, between Sumatra and Batam. Bathymetry (sea depth), current and tide data, reefs, shoals and other obstructions (clay, mud, shells, stones, sand) are marked.

Navigation map of the Riau Strait between Batam, Bintan and Rempang (Riau Archipelago). Bathymetry (sea depth), current and tide data, reefs, shoals and other obstructions are marked. A second map features improvements to part of the original map.

Navigation map of the Riau Roadstead (off west coast of Bintan, Riau Archipelago): a body of water sheltered from tides/currents, for ships to anchor. Bathymetry (sea depth) and various obstructions and landmarks (hills, buildings, trees) are shown.