Indeeed, really nice! Took the same harbour cruise in April (in fact I took the tour on the very dau you posted this!), but Carl Vinson was obviously not "home" then.
Got to pass really close to USS Pasadena and what I think was a Virginia class. The tour guide didn't know which boat it was. First time in the US and I got to see Zumwalt and two nukes! Jackpot!
Walked out of my hotel one morning and in the middle of the bay, just in front of me was a Ticonderoga class Aegis cruiser. That was a rather cool experience.