Rig For Red. Used in submarines, to ensure all interior lighting is red and of low intensity so as to preserve night vision.
http://www.readyayeready.com/jackspeak/termview.php?id=1677
Rig For Red. Used in submarines, to ensure all interior lighting is red and of low intensity so as to preserve night vision.
http://www.readyayeready.com/jackspeak/termview.php?id=1677