
The Big Stick, as the vessel is known, is 332m long and carries over 5,000 crew members. Read more about this mind-boggling beast here and here, and see a Google Maps image of it here. There is apparently a 2-nautical-mile No Fly zone around the ship, by the way; and I figure it's probably a good idea to heed that. ;-)
You can see a few more shots of the USS Theodore Roosevelt on Cape Town Daily Photo Extras. The ship is docked far out in the bay, for security reasons, so bear in mind that we had to zoom in quite a bit...