I'm a librarian who loves anime, manga, and reading a wide variety of genres.
The crew members know each other well enough for there to be a bit of banter, but everyone still pays careful attention to rank. It reminds me a bit of the crew of Mercy of Kalr.
So far, I'm enjoying this, even though I wish the author would stop for a second and explain things more. Definitely not for sci-fi newbies.