The Pensacola class were the first cruisers designed within the restrictions of the 1922 Washington Naval Treaty. The design was finalized in March 1925.
There were two catapults to launch the aircraft. No hanger was built.
The Vought O3U Corsair was the first aircraft used.
Due to the hull lines the 8" triple turrets were placed above the twin turrets.
There were four boiler rooms.