In 1931 the USS New Mexico entered Philadelphia Naval Shipyard and emerged in 1933 looking somewhat like this.
This is a WIP and I'm finding it very difficult to find photos and accurate drawings from this period (Most are ca. 1944)
I do know that she had
Her cage masts removed.
Received tower masts
4 5"/25s were added
and had her torp. bulge added
http://bb40ussnewmexico.com/uss-new-mex ... -1931-1934
I do believe that observation stations were placed on top of the towers where later on she would have gun directors.
Please correct me if I wrong--and I'm sure you will.