To answer a request by Sargentx in the main forum I offer the attached photos and diagrams.
Attachment:
boat booms.jpg [ 177.92 KiB | Viewed 958 times ]
Attachment:
Accomodation Ladder (2).jpg [ 144.66 KiB | Viewed 958 times ]
Attachment:
0414828.jpg [ 136.72 KiB | Viewed 958 times ]
Attachment:
015605.jpg [ 38.52 KiB | Viewed 958 times ]
Stowed position CL-145
Attachment:
Boat Boom, USS Roanoke CL145.jpg [ 44.52 KiB | Viewed 958 times ]
I have a photo of this operational use of the boat boom that is dated 1931
Attachment:
Boat Boom_Alternate Use.jpg [ 126.13 KiB | Viewed 958 times ]
This is a crop from a larger photo of Iowa at NY, 1943. The Port side Aft boat boom is rigged but not out. You can see the king post which sits in a deck fitting and supports the rigging lines. You can also see the fittings on the hull which support the boom when it is stowed.
Attachment:
Iowa 43 NY (2).jpg [ 128.69 KiB | Viewed 939 times ]
Iowa enroute museum duty, Starboard forward Accommodation Ladder, lifted but not stowed.
Attachment:
Iowa Turrets 1 and 2 (2).jpg [ 179.92 KiB | Viewed 939 times ]