I have just finished a two game scenario where the players found one of the Katana fleet dreadnoughts (the nav computers were wiped when they first went to hyperspace and after a set time the hyperdrive blew up and took the coms out with it).
So the players decide to poke around and went to the bridge via one of the emergency exits and stumble on a cross between Event Horizon and a Warhammer 40K Choas ship. It turns out that after a few months with no hope of rescue military discipline broke down and it turned into small factions and petty fiefdoms.
It made the players realise they were very reliant on technology and how would they react if they found themselves stranded in space with no hope of rescue?