I have finished the book now and I have something to say about it.

I found the scenario to be feasible and the portrayal of various human behaviors to be accurate. It's impossible to imagine the low levels that two-legged animals can achieve in their treatment of one another when the ship is sinking.

I have found that the book: "Aftermath" by Levarr Burton to be equally as disturbing as "Lights Out". Also try to find the book: "Pulling Through" by Dean Ing.