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.
Kei- of Ewaf-eilanden
event1895
location_onIndonesia
Map of the Kai Islands, in the Banda Sea, designed for navigation: it features bathymetry (sea depth), tide data (arrows), reefs and shoals. Obstructions in the water are marked ‘kr’ (coral), ‘m’ (mud), ‘s’ (shells), ‘st’ (stones), and ‘z’ (sand).