I feel like this episode has a terrible reputation but it's just mediocre more than terrible.  The ship doesn't look half bad as a set, although the ghost thing is pretty goofy looking.  Our characters also feel a little more annoying here than the usual sort of endearing tone the Moffat era could take.  Like the whole Rory dying thing already felt way played out and just silly at this point.  It's where the story started to lose me because it feels like we are just going by the Eleventh Doctor formula with episodes like this, not offering anything unique even though it's a pirate story - that should be a certain brand of fun I just found missing here.  In comparison, I feel like the show made a better use of the Western trope in Series 7 compared to here.  The Curse of the Black Spot's story isn't remarkable but it is a very easy one to sit through.  Not my favourite but not unbearably bad, either.