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Originally Posted by cardician
Bit of an odd question, but what's the deal with the lights in subs? From 6am to like 9pm or something the light is white, then its red overnight. Why? It is *always* dark in a sub right? Not like they have windows. So a light is always needed. So why not just leave the light white all the time? I know it might be realistic or whatever, but I'm just wondering if anyone knows why  |
Red light makes the eyes accustomed to the dark so when you go out on the conning tower at night looking for ships your eyes are already adjusted to night vision.
Nemo
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"I'm afraid there is no disguising the fact that King's obsession with the Pacific and the Battle of Washington cost us dear in the Battle of the Atlantic".
Sir John Slessor GCB, DSO, MC, DL
AOC-in-C Coastal Command RAF
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