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Henry the Navigator
(1394-1460) A Portuguese Prince, and fourth son their King John 1. He was also the grandson of England"s John of Gaunt. He gathered around him at Sagres (in south-west Portugal) some of the leading astronomers, map-makers, instrument-makers, pilots and scholars of the time - with a view to pioneering a new science of navigation. They invented a lateen-rigged ship, a caravel, designed to make headway against the winds on long voyages, and destined to change the course of history.