Very interesting ten. I’m not sure how effective or useful the terrain removing ability is/could be, but it sounds really cool. The secondary ability is cool, if difficult to use naturally. You could find a way to get Nemo’s Plans+ Rune UT to spam 6’s and move entire squadrons away from her when she gets in trouble.
I don’t know which Cursed crew have the Horror keyword, but I’m guessing most of them are some kind of powerhouse crew. 4 cargo spaces on ship this big would normally be limiting, but the high point cost means you could have fun with some linked crew.
Barj Voragoss would have been very much like DJC Jack Hawkins, if not for the cannon bonus. From the look of things you’ve put RC (reverse Captain) at around 2 points, which I think is fine, considering how it works.