Camouflage Measure and Design was assigned in 10/11/43 ComServPac letter #0937 to the BuShips which assigned camouflage Designs to most ships in the Pacific Fleet.
USS William D. Porter (DD-579) is shown on June 9, 1944 in Massacre Bay, Attu, in the Aleutian Islands. This camouflage is 32/14D. Porter was later sunk by kamikazes on June 10, 1945 while wearing Measure 21, solid navy blue. The two other unidentified Fletcher class destroyers in this photo are in Measure 21. Photo source: NARA 80-G-239360.
USS William D. Porter (DD-579) is shown again on June 9, 1944 in Massacre Bay, Attu, in the Aleutian Islands from the starboard side. Notice that the hull numbers are painted black on the stern and white on the bow on both the port and starboard. The deck pattern is just visible. Photo source: NARA 80-G-239379.