red lighting when attacking while submerged

[perry stirling]

were the u-boats running with dim red lighting when approaching a target while submerged. thx.
perry

[WOLF1]

I always thought the Red lighting was used for the transition from inside the boat, aircraft, bunker, tank etc. to darkness on the outside.
The red light allows your eyes to focus easer in the dark.
I would imagine that it would not be used while submerged as no light, no matter what color could be seen from outside the boat (no windows or opening) only regular (white) lighting would be used while under way and when they needed to come from inside the boat to the outside darkness they would and still do use the red lighting.

Regards

Wolf1

[perry stirling]

wolf1
thx for reply. i'm afraid i wasn't clear. i meant to ask wht the lighting would be inside the submarine while submerged and moving into position to attack. thx.
perry

[Auseklis]

It's also dark outside if you look through the periscope at night...

[WOLF1]

here ther reply from Uboat.net Forum regaurding use of red light inside a U-Boat:

Also used for battle stations....eg. torpedo attacks at nights.


Wolf1