Babylon’s Ashes (The Expanse #6) by James S.A. Corey
The Free Navy is the violent group of the belters in the Black market. They had crippled to the Earth and started the campaign of piracy and violence on the outer planets. This colony ships had headed the thousands of the new worlds.
James Holden and his crew had all the strengths and weaknesses. All the new alliances have flawed away because the new chaos has started as the alien mystery has started. This was published on December 6th, 2016 by Orbit.