One of my friends, from my days at CCSU back in the late-1970s/early-1980s, is a professor at Tuxnis Community College - here in Connecticut - teaching Graphic Arts ...
She said this about the photo and you can see the questions I've just asked her about her comment:
Mary Ann K. Smith Pantone cool gray 8.
Tim Connelly Mary Ann, ... thank you. Are you sure? 100% sure? You're a Art Director/Graphic Designer, so I will assume/presume that you can extrapolate a color from a B/W photo, right? OK ... When you say Pantone Cool Gray 8, exactly what is that? Is it a light gray, a medium gray or a dark gray? Could it be like a dark blue?"
: If I have to guess it would be Ms 21 with 5-N
: paint. But, as I learned from posting an
: earlier photo of PT Boats that were painted
: in RN colors and were eventually turned over
: to the RN (and may well have already been RN
: manned when the photo was taken), I'm open
: to RN paint being used. I have no expertise
: on the 63-ft Crash Boats and their use as
: Spec Ops craft. If you want expert advice
: Mr. Ross.