Thanks! It's a bit inconclusive, someone says "On "normal" difficulty the AI does indeed use ships to transport troops", and I was playing on "very hard". I think the map is the issue, it was the Isthmus of Corinth, once I took the isthmus itself the AI would smash against my defenses there, no attempt to cross the water by ship.

Hi Thalatta, may I recommend to you the following thread?  

AFAIK it happens sometimes. Just try again in a few hours

what happened to the gitea CSS, it's now a basic html page for me!

-Petra doesn’t seem to know that blades must be used against rams. I started playing a few days ago and won in very hard difficulty by leveling the AI’s continent using only a bunch of these unrealistic rams. -It also didn’t try to use transport ships, I guess because there was a land possibility, since on an island scenario I’m pretty sure the AI did it. That would have made things so much more difficult. -Also, it doesn’t send full armies as fast as it could towards the end, it kind of gives up. It should build way more military buildings to spam armies. -It should use more fields, traders and whatever to support the previous point.