Rick,
Underway replenishment and at-sea refueling required additional equipment but to my knowledge did not involve the turret ammo davits; they were strictly used for 16" ammo storage. Replenishment tri-pods were utilized on turrets 2 & 3 as illustrated in the following photo of my Turret #2:
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resized2 Turret 2_5.jpg [ 172.33 KiB | Viewed 2999 times ]
This shows the ammo davit as well as the tri-pod set up on it's stbd side location; there are also two other alternative positions on the port side where the tri-pod could also be located for use. Normally, it was stowed laying down with the 3rd leg laid flat behind it. Here is a shot of my turret #3 with similar equipment:
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Turret 3_1.JPG [ 161.1 KiB | Viewed 2999 times ]
There were only two locations on turret 3 where the tri-pod could be set up. The curved davit was also set up on the turret top for use in lowering items from time to time.
We also had two at-sea refueling locations on the stbd side - two replenishment tri-pods and the at-sea refueling boom. Here is a photo that shows the after stbd tri-pod and boom:
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BB62 Deckhouse Emblem Stbd Side (Large).JPG [ 69.62 KiB | Viewed 2999 times ]
The tri-pods were used for both refueling evolutions and taking on stores and ammunition (crates). They were struck down when not in use.
The '80s refitting saw the refueling stations replaced by the large refueling boom on the stbd main deck just fwd of turret 3 (all 4 IOWAs) and an additional sliding pad-eye kingpost installed on WISCONSIN - photo shows both boom & kingpost:
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BB-64 Sliding Padeye Close up.jpg [ 73.45 KiB | Viewed 2999 times ]
Hope this helps.
Hank