Drawing 33/23D for the Admirable class minesweepers dated May 5, 1944. The vertical colors were white (6-U) and Thayer Blue (5-B) which were Measure 16 colors.
Measure 33 colors were usually ocean gray (5-O) and light gray (5-L) or navy blue (5-N) and pale gray (5-P).
Note, Thayer Blue was medium to light toned color, but is depicted here in black, so the contrast is not representative. Also note, the port view was mislabeled “starboard” and the starboard drawing was not labeled; this may have caused some ships to apply this design reversed port and starboard.
Design 23D was derived from a Measure 16 pattern dated June 1942. The design drawing for Buckley class destroyer escorts was dated March 8, 1944. On May 18, 1944, the Design 23D drawing was reissued for the destroyer Cassin, rebuilt after Pearl Harbor, but both starboard and port bow patterns had been extensively modified even though the design number remained the same; there is no evidence whether Cassin used this modified design.
Original drawing source: NARA 80-G-173256 and 80-G-173257.