steve5
, it's called a stern walk , it comes off of the admirals quarters
Only RN would stick an Admiral aft of the steering gear and its associated machinery. USN practice was to put the Flag quarters on the 01 or 02 level.
On the AA mounts atop turrets. The basic rule-of-thumb was that you always fired in broadside whenever possible, to bring the most number of tubes to bear.
Also, you have a difference between AAA engagements and main-battery enagements. If you are having a 15-20 mile main battery engagement, you are unlikely to also be fending off aircraft, so you could draw those crews off stations. (When attacked by a/c, you need to manuver wildly to evade attack--this is contra indicated for generating computed firing solutions at 15-20 mile distances--those sheels are in the air for 30 or more seconds.)
What becomes a factor in "B" turret mounted AA guns is visibility from bridge levels. Iowa had no AA on the Baker turret as it obsucured the Flag Bridge view forward.