submarines

An idea occurred to me, and I'm wondering if anyone's tried it. The idea is something like this: a mod that spawns a single city out on a secluded snow tile, far away from everything basically. That city starts off with modern technology, while all the other players start with just the basic...

I think with the submarines bonus to attacking into coastal tiles, it makes sense to take over coastal tiles near your city.

Have you ever been on a submarine? What's your favorite type of submarine? Instead of building 3 Zumwalt-class stealth destroyers, should the US Navy instead have just built 4 or 5 Virginia-class submarines? What are the pros and cons of including submarines in carrier strike groups? Discuss...