Didn't actualloy see this:
well heuhen...
http://nimg.nate.com/orgImg/to/2011/02/ ... hj_lsb.jpg
while it is an tight fit, it should be possible to have some additional sets of Mk 41 next to the ones on this pic (the empty space here is reserved for K-VLS)
the block seems a bit offset though, being not entirely on the centerline, so maybe the limit would be 48 cells, but there is not much stopping you from making the deckhouse slightly wider then it is now, and fitting the 64 cell.
the ship is said to be spacious enough to have an 56 cell Mk 41 over there..... I have not yet found the reason why it is 56 and nog 64.
Yeah, no, you actually can't do that, due to structural integrity problems. Remember that you're basically cutting a huge hole in your ship, and need to strengthen the structure around it. Don't forget that the VLS block reaches right down to the waterline, so you actually have to deal with the inward curve of the hull too at that point.
Seems like the 56 VLS could come from three additional K-VLS blocks arranged in the traditional manner.:
Seems it is physically possible to put a 64 cell VLS there, but I seriously doubt it is structurally possible. 48 seems to be the max for this location, with a traditional MK-41 installation. Of course a solution can be to
lengthen the deckhouse, and put a 64 cell in in the traditional manner, but then you'd have to ditch the 127 LW for a smaller cannon, like the 76.