Five Centuries of Hydrography – An Exhibition on Ancient Charts

This nautical chart of Quebec Harbour by Bayfield contains, in addition to depth values, information on tides and the strength of currents. The main streets of Quebec City are also drawn on this chart as well as the perimeter of the ramparts and the Citadel of Quebec. The Citadel Astronomical Observatory is also visible on this chart. This observatory allowed ships moored at the Quebec Harbour to verify the accuracy of their marine chronometers.