The composite drawings for Design 32/2AO for the Patapsco class gasoline tankers based on the T1-MT-M1 maritime hull. The vertical colors specified were: dull black (BK), ocean gray (5-O) and light gray (5-L). This drawing was dated February 28, 1944. This drawing shows two waterlines: a load waterline and a “camouflage line.”
This was common for most tanker drawings.