Why the Portlands were scout cruisers

Nine eight-inch guns did not by themselves make the Portland class a true heavy-cruiser design. In this assessment, the ships lacked protection against eight-inch fire and even robust resistance to six-inch fire. Their four aircraft, flagship spaces, speed, and carrier-screening duties identify them as capable scout cruisers. The redesigned New Orleans class moved closer to a genuine heavy cruiser while retaining limits from the earlier hull concept. The Portlands' strong service record coexisted with a mismatch between their treaty label and their balance of weapons, protection, speed, and intended work.