[REQ] inside lighting

[Hitman]

However there were only two places on my boat that had blue lighting. Sonar and Radio. When we wanted to surface the boat or just go to periscope depth at night, we would rig the control room for black. As in no lights, except for the back lighting from gauges and indicators.

But you didn't serve on a WW2 german uboat, did you?

Just joking, of course you know it first hand about a post-war US sub, but I am not sure what was rigged for what in a WW2 german Uboat. Conning tower for red, that's sure. Control room? Hmmmm, not sure, probably also.

In US subs I have readed (In Jim Calvert's book IIRC) that only the conning tower was rigged for red, so the watch crew spen there the last minutes before going topside and to relief the watch standing ones, and also getting used to the red/dark environment. The control room was normally white lighted. But I guess there were many differences from boat to boat, it's hard to say that had something like a standard practice in this

In a WWII U-boat it was red and white only

Yup, that's consistent with everything I have found so far about german uboats. The best research of the matter AFAIK has been done by the guys in www.u-historia.com and they said that the only reference to blue lights they could find was one external, adopted for training uboats.