Advances In Technology Innovation
The introduction of the magnetic compass gave mariners not only a model new means of navigating in open sea, but, perhaps even more importantly, a method of recording their journeys in a readable and fairly exact way. The portolan map, totally developed by the fifteenth century, was produced by drawing coast strains and islands based on constant strains of compass bearing. In the middle of the fifteenth century, this benefit to navigation was joined by a new ship design that allowed larger maneuverability. The medieval carrack was replaced by the three-masted ship, which supplied extra sail …


