Portal:Africa/Featured picture/23

Nautical chart of Portuguese cartographer Fernão Vaz Dourado (c. 1520 - c. 1580), part of a nautical atlas drawn in 1571 and now kept in the Portuguese National Archives of Torre do Tombo, Lisbon.

Photo credit: Portuguse National Archives of Torre do Tombo, Lisbon

A pre-Mercator nautical chart of 1571, from Portuguese cartographer Fernão Vaz Dourado (c. 1520 – c.1580). It belongs to the so-called plane chart model, where observed latitudes and magnetic directions are plotted directly into the plane, with a constant scale, as if the Earth were plane. The Moors from Spain had maps of the known world, and had been traveling to and from Mecca, Arabia for many years. In 1492, Christopher Columbus had possession of the Maps of the Moors, which had been confiscated from Andalusia and were now in service to Portuguese and Spanish Explorers. The African Moors already knew at that time, well into the 1500's, that the world was round.