I'm 1850 AD, turn 196 on a quick game - Civ 6, Rise and Fall patch. I have Battleships, subs, Ironclads. They all were at deep sea, ocean tiles before, but now can no longer sail the ocean, are stuck near land as if sea travel was no longer allowed. What gives - another update forced upon us through Steam that screws up the game? What would cause sea travel to no longer be allowed? How is it possible to have tech for Battleships, but not be able to traverse the ocean. Please explain - all these patches put out by Firaxis continually screw up the game.