After checking my math I forgot to knock a couple of decimal places off, so 9.89 yds is a MOA at 34K yards.
On the whole issue of a BB in the moder navy:
A BB does one thing very well, and that's put fricking huge shells on targets close to 30 miles inland. It also does it FAR cheaper then a TLAM or other equivalent method of delivering HE (round vs missile; not launching platform). An A-6 can carry approximately 18K lbs of ordinance, roughly equivalent to a full 9 gun salvo from a BB. If the entire CVN airwing of 80+ aircraft is all A-6's that means a BB puts out as much iron in 40 minutes as the entire air wing can. For MUCH cheaper then it would cost to launch and operate that many aircraft. Additionally there's no risk to any aircrews etc.
I also suspect that a BB would be cheaper to maintain/operate then an Aegis cruiser, expecting the number of crew required. A ship made mostly of old school steel parts, with not a large amount of mechanization, automation, or other electronics doesn't break as often and is MUCH easier to repair. A new circuit board isn't something you can normally manufacture on board, wear as a bearing or other piece of metal can be made from raw stock if you know what your doing, a Chief can provide that knowledge
Secondly 99% of the nations we're going to deal with where a BB might be deployed are not going to have the ability to put 200 Backfire's in the air shooting Shipwreck missiles at once. 10-15 Exocets or Silkworms? Sure, that's what the rest of the task force is for, with the Aegis and Ticonderoga cruisers. I don't think anyone in the world (the US included) has a reliable method of stopping a BB's shells from landing on shore. How would have Mogadishu have turned out if a BB had been offshore as part of the task force, the ultimate in "gunboat diplomacy" ? The range of guns on board her would have allowed everything from 5" tactical bombardment, to 16" "might as well be a tac nuke" fire missions. Against a more modern opponent such as Libya or Iran, everything within 30 NM of the coast is in danger of being turned into a lumpy mass of dirt if need be to prevent them from lobbing ASM's at the TF.
Far as the submarine issue goes, that's what the Seawolf and Improved LA class subs are for. BB's don't operate solo, just like CVN's they are part of a much larger task force. CVN's and their air wing provide a long range very flexible force projection ability. A BB provides a shorter range lead pipe force projection ability. The rest of the TF is there to provide cover and support to perform that mission. A major TF/Battlegroup is going to have very little to fear from most of the worlds navies. The AA, ASW, and AASM ability of modern escort ships is superb, and combined with the ASW ability of the submarines that are attached there is little sub-surface to be feared as well.
-Jenrick