I would agree with Bruce as he's been the one keeping me right on Flyingstations about the deck lighting during the development of this model. He also created the flight deck textures so I trust his judgement.
Out of curiosity were you a matelot, wafu as your name suggests, or a fishead?
I'm an ex-crab so never quite got to grips with these nautical fellows and their terms!
What i'm doing for Ark is adding some minimal lighting effects...a couple of navigation lights and some deck edge lighting. Nothing major, just to the same level as what i've witnessed watching the "HMS Ark Royal" discovery programme. So the ship won't be in total darkness but it won't be lit up like a cruise liner either.
Cheers
Gary