Everyone seems to underestimate my own military capabilities. Handful of moabs? Missiles and jets take care of most of it I'd think, but, whatever.
Sinkable, yes, but not so easily as you'd prefer to believe. You'd blow the usable bits to bits before the actual structure sank, meanwhile jets, helicopters, and sea to air missiles all come at you, as well as the possibility of submarines from beneath. I actually put some thought into this, it's not the kind of thing that gets shot and fades away, it gets shot at and comes back with a vengeance.
But whatever, I'm not actually planning any wars with New Manhattan or Olvia, so I'll put it back on the drawing board for now and give it some upgrades, blah blah blah, Unsinkable II will be at it in a few days.