Quote:
Originally Posted by sober
Its suppose to be black to make it more challenging . So you are telling me in ww2 , uboats would sit under the water close enough to the surface to see destroyers above them  |
http://en.wikipedia.org/wiki/Underwater_vision
Till about 50m depth, you have visability underwater .. up to about 80m in ideal conditions. Colors drop off as you get deeper. You could use the periscope underwater .. only issue would be that if you can see them, they can see you as well.