How sailor going from Venice to Athens in the ancient time knew to navigate EXCTALY to the port location?
I can understand general direction by stars or even a compass but to navigate to a very specific location is other problem as I see it.
I did some foot navigation and to get to a specific point of very different then a general direction and you can’t use just general direction. If you miss your journey even in 0.5 degree you will get in totally other coast and not to the port you aimed for.
It will be even a bigger problem on the ocean travels. The Portuguese ships going to South America. How the know to land exactly at the port of Mexico or other places.
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Consistently checking your heading. Just like walking in the woods with a compass. You don’t take one reason and just walk. You take a reading and walk straight for 100 steps and take another reading.
Triangulation. Using land based land marks or stars to check your actual location vs where you think you are and then correcting.
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