The Atlas : Renaissance Voyager

Historical business/discovery game by Japanese developer Artdink. The German version was published by Sunflowers. The game is set in the 15th century. You are in a contract with the King of Portugal. For 10.000 gold a year you have to explore the area 1000 miles south of Portugal within five years. You are allowed to trade with the goods you discover, but all information gathered on your travels is property of the King of Portugal.