Why did long range voyages not follow a straight line when crossing large areas of ocean during the age of exploration?

Long-range voyages during the Age of Exploration did not follow straight lines across large ocean areas primarily due to the need to navigate around prevailing winds and ocean currents, which could significantly affect a ship's speed and direction. Mariners used routes that optimized these natural forces, such as the trade winds and the Gulf Stream, often resulting in a zigzag pattern rather than a direct course. Additionally, navigators relied on their knowledge of geography and potential hazards, which influenced their routes to ensure safety and efficiency.