Some reasons why no quad 40mm on top of B and X turrets on Mississippi. These may be totally specious, but here's what occurs to me:
1. The turrets on the BB40-43 class are actually as small as can be, esp. the back ends. There may not have been adequate room for the roughly 18' diameter quad 40mm shields. The turrets for the more modern classes such as USS Iowa were very large in comparison, esp. at the rear ends;
2. There in fact are quad 40mm bow and stern mountings attached to the superstructure which could have served the same function as turret top mounts;
3. Given the large number of various AA mounts on Mississippi, weight, esp. weight high off the w.l., may have been a factor;
4. The roller bearings for this class of BB would have been designed for a certain weight of the turret. Possibly there was concern that the extra weight of a 40mm quad mount could pose problems for the roller bearings and motor.
: Nice work, as always, John!
: One thing struck me that had never occurred
: to me before.... It was common for the
: NC-SD-Iowa class ships to carry quad 40mm
: mounts on the B and X main battery turrets,
: but it does not see to be so with the older
: vessels. I wonder if there were weight
: problems with main battery turret rotation
: were those extra mounts added. Do you have
: any idea?
: --Previous Message--
: After its last refit, the old battleship USS
: Mississippi was absolutely loaded with
: secondary/tertiary weapons. 5"/25s
: stuck everywhere, 40mm quads all over the
: place, and a few 20mm twins just for fun.
: Just completed a model of her in April 1945.
: It was, to say the least, a ton of work.
: Still have to find and paint a Kingfisher
: for the catapult at the stern. here are
: some photos of her. More photos are in the
: USA WW2 Battleships gallery on my website,
: which is "miniaturemodeling.com".