What metaphors are used in In the Belly of the Bloodhound: Being an Account of a Particularly Peculiar Adventure in the Life of Jacky Faber (Bloody' by Louis A. Meyer?

Metaphor:

"The flaps come slamming down, and we assemble for Chorus and raise our own voices in song - there in the Hold of the Bloodhound, there in our own captivity, there in our own Babylon."