Cleveland Bay, mariner's survey, 1886

Cleveland Bay, surveyed by Lieutenant G.E. Richards, RN, HMS Paluma, 1892. The Admiralty, London, 1892. This map shows tidal signals, depth soundings and tide information for Townsville and Magnetic Island. Also noted are the presence of buoys, coral, gravel, mud, rock, sand, shells and weed. Such detailed maps, sold by the Admiralty, were essential for mariners moving along the coast of Australia and entering Townsville Harbour. Collection of the National Library of Australia