Portolan charts were maritime maps that helped sailors navigate what?

Here is the question :

PORTOLAN CHARTS WERE MARITIME MAPS THAT HELPED SAILORS NAVIGATE WHAT?

Here is the option for the question :

• The stars
• The coast of Portugal
• Port to port
• Magnetic fields

The Answer:

And, the answer for the the question is :

Explanation:

[STC0013103]. In the early 14th century, at the start of the Age of Exploration, the first navigation charts were created. In 1311, an Italian cartographer named Petrus Vesconte produced the first known dated chart. Mariners could employ compass points and wind directions with these portolan maps since they followed simple coastal outlines.