Mr. Shadows
Nomad of the time streams
Are you suggesting there are viable naval timing attacks? These haven't been discussed yet in this thread. I believe most players are using maps with continents (often Pangaea or other one continent maps like Inland Sea), so naval units don't seem that important. I have been able to move embarked units from one continent to another without significant harassment ftom the AI Civs, so I haven't built naval units beyond those needed for a few Eurekas/Inspirations.
Naval units are perfectly capable of laying siege and taking down a city, but there are far fewer coastal cities to take. You will (eventually) want a navy on continents (my prefered map type) but they have a drastically reduced role as conpared to V. It doesn't make sense to build a huge navy because most cities are one or more tiles inland. Battleships are a bit more useful because of their 3 tile range, but even still they aren't likely to make or break you.