Errant.Ventures ghost, did kill, however...it was more of a game, in which only those that participated became vulnerable.
Kind of like voodoo.
Now....In regards to a ghost ship...Initally I wanted to do that, when I had my scylla, however, it became hard....to do with RP characters staying off your ship.
If they RP a boarding onto your adrift, seemingly harmless, valuable ghost ship, then you could RP the Demise of these characters, on your ship, however you want.
For reference to awesome Ghost Ships, in Media:
Event Horizon
The Triangle
Virus.....more of an Alien AI takeover, but you could RP it
for your benefit, Errant.Venture's ghost was a Poltergeist, which has the ability to affect things in the Physical world.