An exchange of navigational knowledge between scholars and mariners.
The Renaissance revolutionized navigational methods and techniques during the medieval period. This new type of thinking spurred advances in such scientific endeavours like geography, astronomy and cosmology. As a result, seafaring was altered significantly. Not only were new navigational instruments developed, but changes in cartography occurred as well.

From Willem Janszoon Blaeu, The Light of Navigation (Amsterdam: William Iohnson, 1622) frontispiece. Found in A.W. Pollard and G.R. Redgrave, A short-title-catalogue of books printed in England, Scotland, & Ireland and of English books printed abroad, 1475-1640 (London: Bibliographical Society, 1976-1991). STC reference # 3112, reel # 1127. Copy courtesy of the microfilm at the Queen Elizabeth II Library, St. John's, Newfoundland. Original housed in The Folger Shakespeare Library, Washington, D.C., USA.