If anybody out there is wondering can the AI perform a sea attack, check this pic out. Hannibal's second stack to the north has 4 frigates and 2 galleons. He also had a third stack coming down from the north that's not visible that had another 3 galleons. That's a total of 25 ships with a potential of 52 land units! Each one of us was on the SE side of our respective continent. He sent his forces north around my continent to back door me. I had just started pumping out modern naval units. But his big mistake was attacking my naval yard that could produce a cruiser every turn and like 4 battleships every 5 turns. He didn't have open borders with Hatty and I had a 2 transports coming up from the south. Luckily I had just enough units to block his units from getting to the coast. He did surprise me though. Good stuff.