USS Albemarle (AV-5) 5 inch guns 40mm AAA
One of Albemarle’s four 5″/38 DP mounts, note the 40mm Bofors tub in the distance. By the end of WWII, they would carry 20 40mm and 12 20mm guns for self-defense against enemy aircraft, more than most destroyers. Not bad for a “tender”