The design drawing for 32/21D, dated January 29, 1944, for the Admiral
class minesweepers. The vertical colors specified for Measure 32 were light gray (5-L) and dull black (BK).
For Measure 33 the colors would be pale gray (5-P) and navy blue (5-N).
The Design 21D pattern was derived from an earlier Measure 16 Thayer Blue pattern but used new colors. Walkowiak and Sowinski provide an excellent comparison showing the similarities of the two patterns in Camouflage 1. Design 21D was drawn up for USS Nashville (CL-43) as early as July 14, 1943. In late 1943 and early 1944 it was also drawn for the Fletcher class destroyers in both Measure 31 and Measure 32 colors.
Original drawing source: NARA 80-G-105498 and 80-G-105499.