zlacker

Reading most of the technology articles would have you to believe that dark ages really existed and for more than thousands years, i.e from Greece to Renaissance time there is no marine technology advancement between them.

The truth of the matter is that the Arabic and muslim are the master of the sea during this so called "dark ages" time, and many advancement has been made from navigation gear of the Arabic astrolobe to the Idrisi map.

In tide prediction Al-Kindi for example, has notable work on tides in his seminal book Treatise on the Efficient Cause of the Flow and Ebb back in 9th CE [1],[2].

[1]al-Kindi:

https://en.wikipedia.org/wiki/Al-Kindi

[2] Al-Kindi:

https://muslimheritage.com/al-kindi/