In my current game as the Vikings, I've taken around 30 cities ampihibously, and started noticing that I wasn't having problems with harbors being destroyed in the battle, like I have every other game I've played (Germany, mainly). The only thing I can think of to chalk this up to is the seafaring trait. When I started thinking about it, I realized that with militaristic civs, the same thing seems to happen with barracks, though I have no C3C non-militaristic games to compare with. Has anybody else noticed this? Is there anything to it?