The concept reminds me of Mortal Engines, they're in a giant self-contained mobile city, but this one is underwater. The first half of the book doesn't use a single contraction, which makes the dialogue sound stilted, apparently at the end they've figured them out, because they're all over. Some of the language felt stilted and there were sentence fragment, which kind of drive me crazy. This feels more like a first draft than something that should have been published, or like something self-published. I couldn't empathize with the main character, finding her overly dramatic and woefully naive/immature. Her dad's hologram says to tell no-one, trust no-one, about the problem with the city, so she starts telling everyone she meets. I get the hero quest, they have to solve difficulties on their own. This book just didn't do it for me, I couldn't finish it, because life is too short for bad books. It is in need of editing or at a minimum, proofreading for consistency, before I could even focus on the story.

An enjoyable book with intriguing worldbuilding and several twists and surprising revelations in the narrative to keep things interesting. The storyline and characters feel a bit formulaic, but they work just fine nonetheless.
I'm looking forward to the sequel.

This book reminds me of the space station that the kids from the 100 lived on.
It definitely has potential to be amazing but needs some more work.

This sci-fi novel imagines a world destroyed by war and by tectonic activity which ultimately causes flooding on such a scale that entire cities lie on the ocean bed. November's Dawn, an ark designed to save what remains of humanity, has been crawling along the ocean bed thousands of fathoms deep for many years. Society aboard the ark has evolved into layers in which the privileged elite are living in relative ease on the upper decks whilst workers of various status are living in challenging conditions on the decks below. Our hero Josie is training to become an engineer when she receives a message from her father who was killed in an accident when she was a young child. The message suggests that there is a radical and risky alternative to roaming endlessly in the deep darkness of the ocean. Josie sets out on a quest to find answers.
The world building is really good ......I felt claustrophobic just reading about the endless deep darkness of the ocean. There are plenty of surprises in the storyline and Josie is a likeable character who has to decide who to trust in a society rife with corruption and power hungry villains. The ending suggests that a sequel is planned and I am intrigued to see how Josie's journey progresses.