sentences:  Ship pilots were required to use a copy of the official government chart, or risk the penalty of a 50 doblas fine.The map probably included a large-scale chart that hung on the wall of the old Alcázar of Seville.Well-known official cartographers and pilots who contributed to and used the map included Amerigo Vespucci, Diogo Ribeiro, Sebastian Cabot, Alonzo de Santa Cruz, and Juan Lopez de Velasco.