This is brilliant!! I love love love the story it is so unique!
I really like the imagery throughout and the dark tone through out is very powerful. I also like your rhyming in the verses, it is subtle and I don't feel it being forced. It gives the poem a nice flow when reading.
The narration is very clever because it starts from the beginning and takes the reader through to the end scene. The ending being that these souls are roaming free in the ocean and awaiting their next victims on ships to come.